Introduction: Arsenic Float

About: Hi I'm PieBaby. I love hosting brunches, baking pies and gardening. Welcome to my Instructables page where everybody can be a kitchen siren.

Paris Green or Scheele's Green, it's beautiful emerald hue has been the bane of many death amongst women in the 19th century, it is even allegedly played a role in Napolean's death. If this arsenic laden dye has caused so much demise to all, oh why not we poison you further. Beware! Here lies a toxic concoction of great peril!

Okay in all seriousness, this Ice cream soda float is not poisonous.. if anything it is really delicious and is quite a treat for Halloween! That color, that drama, that tasty goodness is sure to please your guest and ghouls in your next Halloween party. This Arsenic Float is actually a Lime Flavored Soda, with Honey Vanilla Ice Cream, with bits of White Chocolate skull candy and of course, Dry Ice.

Every part of this recipe is homemade, you could try on my recipe or even purchase store-bought syrups to customized your special beverage. So what does drink taste like? Well if you ever had Wall's Lime Solero popsicle, it taste exactly like it. If your are daring enough, why not add some booze for your adult company as well? So let's go to this halloween special and brew some poison...

Step 1:

Step 2: Poison Tea Labels

Now before we begin, I want to remind you that we are handling dry ice, which can be dangerous if consumed. That's why I took the liberty to make this adorable Poison Tea Tags to attach our tea filters filled with dry ice. As you know accidentally consuming dry ice can be lethal because it causes suffocation and can potential frost bit your throat. To prevent that from happening, the tea bags are big and noticeable and can be remove once the dry ice has completely sublimates.


Feel free to download the Jpeg print of my poison tags I've design.

Print the file unto a card stock or if you are like me, you can print on a normal A4 paper and paste it on a piece of card stock using some adhesive spray, it works just as good.

Once you've printed out your tags, using a scissor cut around the tag as neatly as possible.

Step 3: Prepare Your Tea Bags

You will need some tea bags, You can either purchase them online OR you can use some ready filled bags

Neatly cut your tea bags at the top edge, and remove the fillings for other purposes. Make sure there are no fillings whatsoever as it might alter the taste of your syrup later on.

Set aside.

Step 4:

To create a legit looking tea tag, you will need two of the tags to be sandwiched together.

Drop a small blob of hot glue and stick your string in the middle. Blob a little more hot glue around the edges, and stick the other tag to the other side, design facing out.

Step 5: Homemade Lime Syrup

This syrup is incredibly flavorful and addictive, if you love Key Lime pie, you will definitely love this drink.


2 large Limes (zest and 3 tablespoon of the juice)

1/2 cup of water

3/4 cup of white granulated sugar

Americolor Electric green


With a microplane, zest both of your limes. Then squeeze the juice, you will only need 3 tablespoonsful.

Pour your sugar and water into a small sauce pot. Heat it up on medium heat and stir until the sugar has dissolves completely. Once it starts to boil, let it boil gently for 4 minutes. Then remove from heat, pour in your juice, zest and 5 drops of electric green food coloring.

Pour into a container and let it cool completely before use.

This syrup is good for two weeks refrigerated.

Step 6: Black Honey Flavored Ice Cream

This ice cream is more like a classic custard ice cream base. If you are using a no egg ice cream recipe, be sure to increase the amount of cornstarch. You can make any flavor that you enjoy the most! I love the taste of honey and vanilla ice cream because it compliments the lime soda. Alternatively, you can use a store bought ice cream too, I would recommend Vanilla if you do.


1 pint (2 cups) of whipping cream

1 cup of milk

1 cup of white granulated sugar

1/3 cup of honey

1/4 of brown sugar

1/4 cup of cornstarch

4 egg yolks

1/4 cup of Activated Charcoal powder

1 teaspoon of Vanilla extract


Pour your cream, milk, sugars, honey, cornstarch into a medium sauce pot and cook on medium heat. Whisk your mixture constantly so the cornstarch would not settle to the bottom of the pot and coagulate. Around the 10-15 minute mark, you mixture will start to thicken.

Step 7:

Then pour a ladle-ful of your cream mixture into your egg yolks to temper them. Continue to whisk to prevent curdling. Pour you tempered egg yolks back into the pot and continue to whisk on medium heat until your mixture has thicken significantly.

Step 8:

Once thicken, remove from heat and pour in your activated charcoal powder and vanilla extract. The powder will have a hard time emulsifying into the thick cream but just continue to whisk and eventually it will be one homogeneous mixture.

Cover with a saran wrap with the plastic touching the custard to prevent it from skinning. Place the mixture to cool overnight.

Step 9:

The next morning, churn your ice cream until it's about a soft served ice cream consistency. Pour into a container so it can harden a little more in the freezer until it reaches your desired ice cream consistency. This recipe creates a soft, rich ice cream that doesn't harden into an ice block.

For those who do not have an ice cream churner, you can always churn your own ice cream by folding the mixture every few hours in the freezer.

Step 10: White Chocolate Skull Candy

To learn more about how I make this incredibly adorable mini skull molds, check out last year's Halloween post here!:

For this skull candy you will need:

1 bar of white chocolate, finely chopped

Skull mold

Piping bag or ziplock bag


On a double boiler, melt your white chocolate until it is smooth and runny. Pour your meltd chocolate into a piping or ziplock bag and snip a small hole. Squeeze a little big of chocolate into your mold and let it harden completely in the freezer for 30 seconds.

Step 11:

Check out this little mini skull candy, aren't they just super cute!

Step 12: Prepping Your Dry Ice Tea Bags

You will need:

1/2 pound of dry ice

Hammer and Tongs for handling


Tea tags with strings

Safety Goggles


Carefully hammer your dry ice so you have small piece about the size of quarter coins and small enough to fit inside your tea filter bags. Place one dry ice inside and fold the ends to seal it. Place the other end of the string of you tag on top of the folded edges and staple them securely.


You will need:

1 litre of Club Soda

White chocolate Skull candy

Lime syrup

Black charcoal Honey Ice Cream

Dry Ice Tea bags

A tall glass, like a Highball


Place some skull candy at the bottom of the glass. Then pour about 2-3 tablespoons of our homemade Lime flavored Syrup. Pour your club soda halfway up the glass. Do not put too much or it will overflow later. Then gently place your dry ice tea bag into the soda. Scoop your ice cream into the glass, preferably dunking and submerging the dry ice even further down for it to bubble profusely.

Discard the tag when the dry ice has completely sublimates. Enjoy!

Note: Now because the ice cream is black, naturally the drink will darken into a dark off-green gray color. For those who might be a little turned off by the midnight hue, you can alternatively use vanilla ice cream. It will more or less taste the same, but the end coloration will be a bright Kermit green be more cute than scary, especially for the younger kids....whatever floats your boat you guys! Enjoy and have fun for Halloween, xoxo.

Halloween Contest 2018

Participated in the
Halloween Contest 2018