Cheese puffs

Water	1 cup
Salt	½ teaspoon
Butter, unsalted	¼ cup
Flour	1 cup
Dry mustard	½ teaspoon
Cheddar, sharp, grated	1 cup
Eggs, room temperature	4

1. Preheat 425°F.
2. In a medium saucepan, bring the water and salt to a boil.
3. Add and melt the butter.
4. In a small bowl, toss the flour, mustard, and cheese together.
5. When the mixture is close to a boil again, add the cheese mixture.
6. Reduce heat to medium-low, and stir the mixture until it holds together in one mass, the texture is smooth, and it pulls away from the sides easily, about 1 to 2 minutes.
7. Remove from heat, and cool for 5 to 10 minutes.
8. Beat in the eggs, one at a time, until the dough has completely incorporated them.
9. Scoop onto a greased baking sheet, and bake for 20 minutes or until they puff up golden brown.