Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make pan dulce [title] Combine the yeast and warm water. [step] Add ½ cup (118 ml) of warm water to a large bowl, and sprinkle 1 packet (¼ ounce/7 g) of active dry yeast over it. Stir the two together to just combine them.

Ending1: [title] Let the mixture sit for 10 minutes. [step] It's important to proof the yeast to ensure that it's alive and active. Ending2: [substeps] Don't use more than ¾ cup (180 ml). You won't be using all of the yeast. Ending3: [substeps] If you prefer a sweeter flavor, you can substitute plain whole wheat oats instead of the active dry yeast. [title] Knead the remaining flour on your hands. Ending4: [substeps] You can use this recipe to make a pan dulce for pancakes, waffles, breakfast meals, or similar dishes. Be sure to use a metal spoon or other utensil to stir the two ingredients.

Answer format: ending1/ending2/ending3/ending4