Sasha jarred 25 liters of jam after 5 days. How much jam did Sasha jar if she spent 7 days making jam?

Sasha's daily rate is 25 liters of jam / 5 days = <<25/5=5>>5 liters/day.

So, Sasha can produce a total of 5 liters/day x 7 days = <<5*7=35>>35 liters of jam. Answer: \boxed{35}.