No...
Baking soda is not at all similar to tapioca starch, so you would get a very different result if you replaced one with the other. A more logical substitution for tapioca starch would be corn starch.
Corn starch is often used in bath bombs as a binding agent that helps hold the ingredients together, ensuring they maintain their shape. It also acts as a thickening agent, creating a smoother texture in the bathwater and enhancing the overall bath experience. Additionally, corn starch can help soften the skin, providing a moisturizing effect when dissolved in water. Its inclusion can also contribute to a more luxurious feel during the bath.
You would use potato starch and water
tapioca starch
You can use 4 teaspoons of quick cooking tapioca OR 1 tablespoon corn starch in place of 2 tablespoons flour for thickening.
You can use flour or tapioca starch as substitutes for cornstarch in pie filling.
To replace cornstarch with tapioca, use the same amount of tapioca starch as you would cornstarch in your recipe. Keep in mind that tapioca may give a slightly different texture, often resulting in a chewier consistency. Additionally, tapioca may require a bit more liquid, so adjust your recipe accordingly if needed. When thickening sauces, mix tapioca starch with cold liquid before adding it to the hot mixture to prevent clumping.
I USE THE MINUTE TAPIOCA ( IN THE RED BOX AT GROCERY STORES)& MAKE IT WITH SPLENDA. THIS DOES NOT RAISE MY BLOOD SUGARS ANY MORE THAN SUGER-FREE PUDDING. I DON'T KNOW ABOUT THE PEARL TAPIOCA THAT NEEDS SOAKING FOR LONGER PERIODS OF TIME.
The amount of starch to use in fishballs can vary depending on the type of starch and the recipe. Typically, you may use around 1-2 tablespoons of starch (such as cornstarch or tapioca starch) per pound of fish meat. It helps bind the ingredients together and gives the fishballs a good texture. It's best to follow the specific recipe you are using for the best results.
When you look at tapioca pearls, they do somewhat resemble fish eggs. However, they are made from a South American root starch. They are basically plant material, not roe. The pudding itself does use ordinary every day chicken eggs in the recipe, along with the tapioca, milk, sugar, and vanilla.
If you're looking for a substitute for clear gel starch in canning, you can use cornstarch or tapioca starch as alternatives. Both can provide a thickening effect, but they may result in a slightly different texture. Be sure to mix the cornstarch or tapioca starch with a little cold water before adding it to your recipe to avoid clumping. Adjust the quantity based on desired thickness, as they may require different amounts compared to clear gel.