Please choose the correct solution to the question: how to get rid of foam when cooking jam

Solution1: add a small pat of sour cream when cooking fruit for jams and jellies, you won’t have any foam to skim off the top.

Solution2: add a small pat of butter when cooking fruit for jams and jellies, you won’t have any foam to skim off the top.

Answer format: solution1/solution2
Answer: solution2