Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make humitas [title] Make a corn puree. [step] Peel the corn and set the cornhusks aside. Cut off the kernels and use them to make a puree.

Ending1: Cool the purée in the refrigerator for 6 to 8 hours. You can break the corn into chunks for pureeing later. Ending2: Place the kernels in a coffee grinder and grind them until they break down into fine bits. [substeps] If you don't have a coffee grinder, you can use a few large wooden spoons. Ending3: [substeps] You can use a grater to grate the corn by hand and thus make a puree. Or you can put the kernels in a food processor and allow this device to turn them into a puree. Ending4: If you don't have a kitchen knife, use this instead. Place the chickpeas into the large bowl.

Answer format: ending1/ending2/ending3/ending4