Please choose the correct solution to the question: How do you thicken heavy whipping cream?

Solution1: Pour 2 cups of heavy whipping cream into a measuring cup, then pour  the heavy whipping cream into a glass jar, place a fitted lid on the jar, twist the lid tightly, then shake the glass jar very slowly for ten minutes.

Solution2: Pour 2 cups of heavy whipping cream into a measuring cup, then pour  the heavy whipping cream into a glass jar, place a fitted lid on the jar, twist the lid tightly, then shake the glass jar vigorously for ten minutes.

Answer format: solution1/solution2
Answer: solution2