Step 1: Gathering Your Ingredients
1 box Mochiko glutinous rice flour
1 + 3/4 cup white sugar
1 tsp baking powder
2 cups water
1 tsp vanilla extract
1 14oz can of coconut milk
You can find the Mochiko flour and potato starch at a Chinese or Japanese grocery store. If you can't find the Mochiko brand, you can just buy a bag of glutinous rice flour.
You will also need the following basic tools:
9x13 baking pan
Measuring spoons (to measure in tsps)
2 mixing bowls
You will need to use a pan that is exactly 9x13 (or very close to it) because changing the size of the pan changes the thickness of the mixture, thus changing the baking time. I've tried using differently sized pans in the past, and it hasn't worked well.
This recipe makes a lot of mochi (around 35 servings).
Step 2: Preheating and Mixing Ingredients
In a large bowl, whisk the entire box of Mochiko flour with the sugar and baking soda.
Step 3: Mixing More Ingredients
Now slowly blend the mochi flour mix into your second bowl, whisking continually. As you mix the ingredients, the mixture should become much thicker. Mix until the mixture is smooth and doesn't contain any clumps.
This video shows the consistency that your mochi mixture should have when you're done:
Step 4: Putting the Mixture in the Oven
Cover the pan with aluminum foil, and place it in your oven for 1 hour.
Step 5: Cooling
The mochi should be sticky but firm. Here's a video of what it should look like:
If the consistency seems fine, let the pan cool for about 10-15 min on your stovetop, and then refrigerate it overnight. It takes about 4-5 hours to completely cool. If it's not firm enough, leave it in the oven for a little while longer (probably around 10-15 min depending on the consistency).
Step 6: Cutting the Mochi
FIrst, prepare your work surface by placing plastic wrap over a cutting board. Sprinkle some of the potato starch onto the plastic wrap to prevent the mochi from sticking to the plastic wrap. I usually keep some potato starch in a bowl so that I can grab some when necessary (mochi is sticky, so you'll need it!).
Take a knife, and run it along the edges of the baking pan. Then flip the pan over the plastic wrap, and the mochi should fall out. Then use your knife to remove the border of the mochi sheet, which is a bit crusty - it should taste fine, but the texture is crunchier than mochi should be, so I usually remove it and eat it separately.
Then proceed to cut your mochi into squares, adding potato starch as necessary to prevent the pieces from sticking to your hands and to each other. Don't add too much potato starch, though, or else the mochi will have a powdery, starchy taste.
When you're done, you should have some delicious mochi to eat!