Introduction: How to Make the Portal Cake

Picture of How to Make the Portal Cake

The cake is a lie.

No, not really. This one's actually very real and very delicious.

This Instructable will show you not only how to make a cake, but how to make THE cake from Portal.

The basic cake recipe for the middle layer can be used to make any homemade cake. If you want white cake, simply leave out the cocoa.

It's easy to do and relatively cheap. So let's get started!

Step 1: #1 Ingredients

Picture of #1 Ingredients

The first step for this cake, like any cake, is to get your ingredients together. This particular cake can probably be described as a German Chocolate cake. It has two layers made from a box, and a center layer made from scratch (which is an important to this Instructable and cake). All of these ingredients were actually taken from a recipe appearing in the game Portal.
While it doesn't give the specifics of how to prepare it, with a little fooling around, I figured out the basics.

Pre-Packaged Chocolate Cake
1 (18.25 oz) package chocolate cake mix
3/4 cups vegetable oil
4 large eggs
1 cup semi-sweet chocolate chips

Scratch Chocolate Cake
3/4 cup butter or margarine, softened
2/3 cups granulated sugar
3 large eggs
1 teaspoon vanilla extract
2 cups all purpose flour
2/3 cups cocoa
1/4 teaspoon baking soda
1 teaspoon salt
1/4 teaspoon baking powder
3/4 cups water

1 can vanilla frosting
2 cans coconut pecan frosting
1 small Cool Whip
1 small jar marachino cherries

Step 2: Making the Pre-made Cakes

Picture of Making the Pre-made Cakes

To start off with, get all your ingredients for the box cakes out and ready. It's much easier to work if you don't have to run to the fridge and get something every 2 minutes.

You're also going to want two (2) 8-9 inch cake pans.

An important note! Get a cake mix that requires oil and eggs!

Now, follow the instructions on the cake box pretty much exactly. If the box instructions call for greased pans, do it. Also, preheat the oven according to the box.

Use the amounts listed in the ingredients I provided, such as 3/4 oil and 4 eggs. If the mixture is too thick, use a little water. You should probably be pretty good with just the liquid from the oil and eggs though. The other important step is to mix in the chocolate chips BEFORE you pour the mixture into the pans. I've forgotten this before, and let's just say it's not good.

Now, once you've poured the mixture into the pans, bake it! It's usually a good time now to take the butter for the next cake out and let it start softening. You'll know they're done when you insert a toothpick into the cake, and it comes out clean (meaning no goo or liquidy batter). Don't overbake them though! The residule heat from the pans will cook it a bit as it cools. Once they are done, take them out and put on some cooling racks to chill for a bit.

Step 3: Making the Scratch Cake

Picture of Making the Scratch Cake

Now, while the other cakes are cooling, you can start making your very own, homemade cake!

Again, remember to get all your ingredients out before hand.

Preheat the oven to 350 F (or 176 C for you metric people).

In a medium/large bowl, "cream" together the sugar and butter. Creaming them means to beat them together with an electric beater till they're creamy and white in apperance. Beat in the eggs, one at a time. Next, stir/beat in the vanilla. In a seperate dry bowl, combine the flour, baking powder, salt, and cocoa and mix together until uniform throughout.

Now I mentioned the baking soda before and you're probably like "Brian, when do I use that?" Well, in the Portal recipe, it included both baking powder and soda. The recipe I found online to make a homemade cake only included baking powder. I've made this cake twice using baking powder, but never with baking soda. If you want to be adventurous and try it, be my guest and mix it in with the dry ingredients. If it comes out fine, post in the comments and I'll change the recipe. Just because I never did it doesn't mean you shouldn't ;)

Now, combine the dry mix with the creamed mixture and mix well. It should be pretty thick, so don't expect much. Now, add water until the batter is pretty smooth and pourable. You don't want it to be so thick it stalls your beater (it's happened), but you don't want it to be super runny either. With some practice, you'll find the water sweet spot ;) I find it to be around 3/4 cup to 1 1/4 cups.

Now, your other cakes should be done, so carefully remove one of them from its pan. Wash the pan real quick with some soap and water and dry. If you have a 3rd cake pan seperate from the other two, ignore that last part. Grease and flour your cake pan and pour in your batter.

Bake your cake for 30-40 minutes. I usually find that it takes a little longer. Remember the toothpick test! Last time I made this, I was in too much of a rush, removed it too soon, and when I went to cut it, the inside was still batter.

Once done, allow to cool. This could take a while, so go watch some TV or play a game for a bit (might I suggest Portal?).

Step 4: Decorating the Cake

Picture of Decorating the Cake

Now that your cakes are cool and Portal is sufficently beaten, find yourself a nice plate or casserole dish with a good sized depth. It should be as big around on bottom as your cake is, as you're going to be putting it on there to decorate it. Flip the dish over and put your first pre-made cake on there (doesn't matter which). Find a nice, big knife (a bread knife is perfect) and try to cut straight across the top of the cake to make it level. This takes a little trying, and I am by no means a pro a this. Just try to get it level as possible. Once it's cut, crack open the vanilla frosting and spread a nice, thickish layer on top.

Place the scratch cake on top, rinse and repeat. On the final pre-made layer, don't put the vanilla frosting on top.

Now, if you have a frosting spreading type knife, now would be the time to use it. Scoop a good amount of coconut pecan frosting on top of the cake and spread it around the top and sides. Do until the cake is sufficiently coated in frosting. If the frosting starts to droop or fall off, put the cake in the fridge or freezer to chill and firm up for a bit.

Wait to put the whip cream and cherries on until right before serving. Take a Ziploc bag (small works fine) and put some Cool Whip in it. Clip the corner of the bag to make a cheapo pastry bag. Squeeze out whip cream dolops around the cake. Get as many cherries out as you have whip cream spots. Give them a little rinse, dry, and place on top of whip cream.

Step 5: Enjoy!

Picture of Enjoy!

The cake should look fantastic and delicious. Add a candle and "Still Alive", and you're set for a Portal evening!

I should warn you though, the cake is incredibly rich. It took me an hour just to finish one piece. Seriously, share it with your friends. :)


jamesjamesjames (author)2011-09-04

A Portal cake a made for a friends birthday =)

josheee12 (author)2009-05-31

I'm making a note here: HUGE SUCCESS

sir-zeke (author)josheee122009-08-20

its hard to overstate my satisfaction

sensitivepsycho (author)sir-zeke2009-10-28

Aperture Science.

sir-zeke (author)sensitivepsycho2009-10-28

We do what we must
because we can.

sir-zeke (author)sir-zeke2009-11-16

for the good of all of us

kiranshila (author)sir-zeke2009-11-27

except the ones who are dead.

sir-zeke (author)kiranshila2009-11-28

But there's no sense crying over every mistake.

xana (author)sir-zeke2009-12-09

just keep on trying till you run out of cake.

dombeef (author)xana2010-08-20

and the science gets done and you make a neat gun for the people who are still alive

TyMan210 (author)dombeef2011-06-09

She was a lot like you
(Maybe not quite as heavy)

mason0190 (author)sir-zeke2009-12-02

and while you're there, get the cakee (the one recieving the cake) tested at Aperture Science Laboratories.

scott! (author)josheee122009-06-30

anyway, this cake is great

fatalfall11 (author)scott!2009-07-16

Its so delicious and moist.

scott! (author)fatalfall112009-07-16

Look at me still talking when there's science to do.

watermelonhead (author)scott!2009-07-27

When I look out there, it makes me GLaD I'm not you.

scott! (author)watermelonhead2009-07-27

I have experiments to run, there is research to be done

watermelonhead (author)scott!2009-07-28

on the people who are still alive

scott! (author)watermelonhead2009-08-03

and believe me I'm still alive

watermelonhead (author)scott!2009-08-03

I'm doing science and I'm still alive

i feel fantastic and im still alive

when you're dying I'll be still alive

scott! (author)watermelonhead2009-08-03

Still alive

watermelonhead (author)scott!2009-08-03

noes, you forgot one.. when you're dead i will be still alive

scott! (author)watermelonhead2009-08-03

Oh yeah, haha! Well... Still alive Still alive

RedneckAsian (author)scott!2009-10-26

*end credits*

actually teh end credits happens throughout the whole song. LAWLS

I meant the end of the credits


mason0190 (author)watermelonhead2010-07-29

im dead but still alive!

when you're dead i will still be alive

Detonator (author)2010-10-18

Don't forget garnishes such as:
Fish shaped crackers
Fish shaped candies
Fish shaped solid waste
Fish shaped dirt
Fish shaped ethyl benzene
Pull and peel licorice
Fish shaped organic compounds
Sediment shaped sediment
Candy coated peanut butter pieces. Shaped like fish.
One cup lemon juice
Alpha resins
Unsaturated polyester resin
Fiberglass surface resin
and Volatile malted milk impoundments
9 large egg yolks
12 medium geosynthetic membranes
one cup granulated sugar
An entry called 'how to kill someone with your bare hands'
Two cups rhubarb, sliced
2/3 cup granulated rhubarb
One tablespoon all-purpose rhubarb
One teaspoon grated orange rhubarb
Three tablespoons rhubarb, on fire
One large rhubarb
One cross borehole electro-magnetic imaging rhubarb
Two tablespoons rhubarb juice
Adjustable aluminum head positioner
Slaughter electric needle injector
Cordless electric needle injector
Injector needle driver
Injector needle gun
Cranial caps
And it contains proven preservatives , deep prenetration agents, and gas and oder control chemicals that will deodorize and preserve putrid tissue.
And, make that two cans of frosting. You will need a jar of nice big pitted Cherries,Sliced Almonds and dessicated Coconut.

Deathmyfriend (author)2010-07-31

I did! I read it and It's a little confusing. I tried making it the way GLaDOs told me to and it turned out really runny and not at all able to be baked. If you follow this, you won't have to overstate your satisfaction. There will cake, and grief counciling at the end of this test.

If you follow the recipe exactly, the fish shaped ethyl benzene takes out the runniness.

This post is a lie...

willrandship (author)2010-09-02

The recipe also appears from the blue orb in the boss sequence, and is much easier to write down since you don't need to sift out the garbage.

rick65000 (author)2010-08-25

The baking soda fluffs the cake. The baking powder keeps the cake from exploding. Baking soda and baking powder are referred to as leavenging agents at this pro site.

HisDivineShadow (author)2008-11-15

im sorry but the real cake recipie is... one containter of chocolate icing 1 pound of chocolate chips 3 quarter cups vanilla cake mix 2 quarter cup poly fiber glas resin dont forget fish shaped garnishes such as: fish shaped candies fich shaped crakers and im failing, aren't I?

don't forget sediment shaped sediment.

Duct Tape Dude (author)josheee122009-12-26

or an article called "How To Kill Someone With Your Bare Hands".

ariath (author)2010-01-07

i think i'll make this cake to my boyfriend on valentine's day :3 he'll love it :3

Motts (author)2009-11-23

Did anyone else read this instructable entirely in GLaDOS's voice?

Duct Tape Dude (author)Motts2009-12-20


mason0190 (author)Motts2009-12-02

Craftibles (author)2009-10-23
Great, but one Suggestion. It may just be your camera, but the cake looks heavily uneven and slightly off color.
inept (author)Craftibles2009-10-26

 Yeah, it's probably just the picture.

sir-zeke (author)2009-08-30

i would suggest adding a picture of the cake in-game for people who havn't played or don't remember what it looks like to compare

Thecakeisalie (author)2009-07-26

(cries) COMPANION CUBE!!!!!!!!!!!!!!!!!! Portal rocks

FreshPineSent (author)2008-10-14

Where is the front of your oven?

inept (author)FreshPineSent2008-10-14

Haha I don't really know. It's pretty much been that way as long as I can remember. It still works though, so that's what matters :)

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