Courtesy of Emily Calandrelli on behalf of Wonder Bread
2 tablespoons dry yeast
1 tablespoon sugar
2-3 tablespoons lukewarm water
1 large mouth, glass pint bottle
1 party balloon
In cup, stir yeast, sugar and water. Using funnel, pour mixture into bottle. Add more water as needed to push mixture through bottleneck.
Quickly stretch balloon over mouth of bottle.
Observe bubbles in yeast mixture and watch ba…
