Please choose the correct solution to the question: thicken a milkshke

Solution1: Crush some ice cubes to thicken your milkshake. Your ice cream may be cold, but crushed ice will bolster the chill in the milk to produce a thicker shake. Substitute heavy whipping cream for the milk. The cream will create almost a fluffy texture – and just might require a spoon.

Solution2: Pour some hot boiling water in  to thicken your milkshake. Your ice cream may be cold, but crushed ice will bolster the chill in the milk to produce a thicker shake. Substitute heavy whipping cream for the milk. The cream will create almost a fluffy texture – and just might require a spoon.

Answer format: solution1/solution2
Answer: solution1