Cashew Garlic Alfredo Sauce

This is copied from Tofu Mom's wonderful blog, here

1/2 cup raw cashews (not roasted)
1 tsp. fresh lemon juice (I don't measure, just a good squeeze)
1 1/2 cups boiling water
1 clove garlic (or more to taste)
1 Tbsp. extra Virgin Olive Oil
2 Tb. nutritional yeast (optional)

Pulverize raw cashews in the food processor until very fine. Add 1 1/2 cups boiling water. (*The BEST way to do this, is to make the sauce while the pasta cooks - scoop out 1 1/2 cups of lightly salted pasta-cooking water and use it - the starch from the pasta-cooking water thickens the sauce PERFECTLY!) Add water to cashews and process until smooth... this will take several minutes.
Add nutritional yeast (optional - my kids prefer it without), garlic clove, olive oil and squeeze of lemon juice. Process again until smooth, another couple minutes, it'll start to thicken a bit too! Makes a decadently creamy sauce. Serve over cooked pasta.