You need:
- 3/4 cup water
- 1/8 tsp agar agar powder
- roasted soybean flour
- brown sugar syrup
- dome mold (I recommend a single, hard one like one for whiskey)
Heat the water on medium-low. Sprinkle the agar agar and stir until it dissolves (about a minute). Pour into your mold and let it firm up.
Experiment #1:

My results for #1:
The texture of the raindrop cake was awesome. So velvety and soft. Unfortunately only the first one came out "round". I think a silicone mold isn't the best option for a soft texture like this. I also don't think it's good to have one that has multiple cups. I was trying to move the first one out and I think the other ones kind of "broke" while I was trying.
Because of my silicone mold, I think all of them kind of broke so none of the other ones successfully came out.
The rest were clear, but all came out as blobs.