Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make ricotta cheese [title] Prepare the strainer. [step] Line the fine-mesh strainer with a large piece of cheesecloth, and set it over the nonreactive bowl. Set this contraption on your work surface so to have it ready for the cheese mixture.

Ending1: [title] Blend and whisk the milk, egg, butter, and soft cheeses. [step] Pour the warm milk into the blender and blend it for about a minute, or until the cheeses are visibly mixed. Ending2: [substeps] If you don't use cheesecloth, it will be difficult to separate the cheese curds from the whey. You can substitute a double layer of paper towels or a thin cotton dishcloth in a pinch. Ending3: [substeps] The strainer will stay on the lid to serve. [title] Spray the strainer with nonreactive mixing foam. Ending4: [title] Pour the cheese mixture into the strainer. [step] Turn the bowl upside down to reach the strainer.

Answer format: ending1/ending2/ending3/ending4