Hi, I recently made a thai yellow chicken curry from scratch, without needing the paste, and is so simple, so thought others may be interested in it.
Yellow Curry Sauce Ingredients
2 red chilies (or substitute green), depending on desired spiciness, OR 1/2 to 1 tsp. cayenne pepper (I used the cayenne pepper, as don't have a high tolerance for spice, and felt would be easier to modify by using the pepper rather than fresh chillies)
2 shallots (or 1 small cooking onion)
1 thumb-size piece of ginger, sliced
3 large cloves garlic
1 tsp. ground coriander
1 tsp. ground cumin