Wednesday, 10/21/2020
3:00 - 3:15
Virtual Library

Online Services
San Francisco, CA 94102
United States

Can you make edible cottage cheese? Learn the science with a quick and easy recipe. Gather 1/2 gallon of milk, vinegar, strainer, bowl, two pots, something to stir the mixture and one tablespoon for this challenge with YELL 2020 teen intern Aashka.


Tune in to SFPL YouTube.


STEM Challenge Yo’Self | Teen Takeover is created by the San Francisco Public Library from the Youth Engaged in Library Leadership (YELL) STEM team. Stay STEM-tastic by reading, learning and experimenting at home. Gather materials for a new challenge posted at 3pm on weekdays throughout October. Visit for more resources.