2 cups vegetable broth or water
1/4 cup whole wheat flour
1 tablespoon olive oil
3 garlic cloves, minced
pinch of dried thyme (crumbled in your fingers)
1/4 teaspoon salt
several pinches of freshly ground black pepper
1/8 teaspoon turmeric
3/4 cup nutritional yeast flakes
1 tablespoon fresh lemon juice
1 teaspoon prepared yellow mustard
Combine the broth and flour in a measuring cup and whisk with a fork until dissolved.
Preheat a small saucepan over medium-low heat. Place the oil and garlic in the pan and gently cook for about 2 minutes (or just steam-fry), stirring often and being careful not to burn the garlic.
Add the thyme, salt, and pepper, and cook for about 15 seconds. Add the broth, turmeric, and nutritional yeast, and raise the heat to medium. Use a whisk to stir constantly. The mixture should start bubbling and thickening in about 3 minutes; if it doesn't, turn the heat a bit higher.
Once the mixture is bubbling and thickening, stir and cook for about 2 more minutes. Add the lemon juice and mustard. The mixture should resemble a thick, melty cheese. Taste for salt (you may need more depending on how salty your vegetable broth is), turn off the heat, and cover the pan to keep it warm until ready to use. The top might thicken a bit while it sits, but you can just stir it and it will be fine. Serve warm.
Veganomicon, page 214-215
Isa Chandra Moskowitz & Terry Hope Romero