1 c vegetable oil

1 egg

3 tsp fresh lemon juice

3/4 tsp salt

1/2 tsp dry mustard

1 tbs hot water

In the container of a blender, combine 1/4 cup of the oil, the egg, lemon juice, salt, and mustard, and blend for just a few seconds. With the blender running, drizzle in the remaining 3/4 cup oil. Blend in the hot water.

Yields 1 cup