Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make watermelon jello shots [title] Using a juicer, juice the limes. [step] Let the juice drop through a sieve into a bowl so that you can catch the seeds easily. [title] Reserve the juice for another use.

Ending1: [title] Place the watermelon flesh in the freezer. [step] Letting the watermelon rest for 24 hours will stiffen the watermelon flesh further. Ending2: [title] Turn the lime rinds inside out. [title] Find the membrane that connects the pith to the rind and pull on it to separate the pith from the rest of the lime, using a paring knife if needed. Ending3: [step] Place it in a glass or container and chill to preserve its flavors and texture for about 4 days. [substeps] Use freshly cut watermelon and fresh juices so that you don't have to strain them. Ending4: [step] For example, place 1 cup of ice cream into a glass and put the lemon zest into the blender. Add 1 tablespoon of nutella , 1 tablespoon of lime juice and the lime zest to the blender for further control.

Answer format: ending1/ending2/ending3/ending4