Prepare onions and curry oil: In a large saucepan, put 1/4c olive oil on med. high heat. Add 2 heaping tablespoons of curry powder when oil is hot. Add a dash of chili sauce, cumin, and a couple of drops of sesame oil--I like a little extra cumin. Stir with a wooden spoon and let simmer until mixture turns slightly darker (but does not burn!) Add chopped yellow onion and cook until translucent (add water as needed to keep onins from sticking to pan). Taste mixture and add more curry as desired.