Butternut Squash Curry without peanut

30 ml oil 15 ml mustard seeds 1/2 kg fresh salmon , boneless and skinned, cut into chunks (but save the skin!) 1 large onion , cut into strips 2 garlic cloves[...]

1 tablespoon peanut oil 1/2 large onion , chopped 2 cloves garlic , minced 3 1/2 cups chicken or 3 1/2 cups vegetable stock 1 butternut squash, peeled seeded[...]