You will need some warm water, a small clean plastic soda bottle, a packet of yeast, 1 tablespoon of sugar, and a small balloon. First, you need to fill the bottle p with bout 1 inch of warm water.
Most of us have inflated a balloon, but have you ever noticed the difference in temperature between an inflated balloon and a deflated balloon? STEP 2: Deflate the balloon and then quickly feel the ...
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