Difficulty: Easy - for beginners
Dietary guidance: v v n g d
1/2 cup nutritional yeast
1/4 cup cornstarch
2 Tablespoons flour
1 teaspoon salt
1/2 teaspoon garlic powder
2 cups water
1 teaspoon mustard
1/3-1/2 cup vegetable oil
Mix the dry ingredients in a saucepan.
Whisk in 1 cup of water and cook over medium heat, whisking constantly until it thickens and bubbles.
Remove from heat and whip in 1/2 cup oil and mustard.
Put back on the heat and slowly add the remaining water.
Cook until thickened and bubbly (it will have the consistency of a nacho cheese sauce).