Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make twist donuts [title] In a medium bowl, dissolve the yeast in the warm water. [substeps] Water should warm-at least 98 ° f (37 ° c)-but not boiling [title] Add the margarine or butter, sugar, salt, and warm milk to the yeast mixture; mix until smooth. [substeps] Milk shouldn't be too hot , 30 seconds in the microwave is just fine.

Ending1: There should be no lumps in the dough. [title] Add the vanilla extract and blend to combine, pausing at the bottom when the dough begins to clump. Ending2: The serving size will be roughly 2 oz. [title] Chill the mixture in the refrigerator until thick. Ending3: [title] Add flour to the mixture and mix for 30 seconds. [substeps] Mixing can be done with a dough mixer or an electric mixer. Ending4: In a pinch, a spatula might also work as well. Be careful; the milk for crunch is warm (no-smoking at 200 ° f), but very hot (crash or rising).

Answer format: ending1/ending2/ending3/ending4