No time to soak the cashews overnight? Quick-soak them in just-boiled water for 15-30 minutes instead. Stick to full-fat coconut milk - the fat is what makes the sauce taste indulgent, so skip the light version. Store leftovers in an airtight container in the fridge for up to 3 days and reheat gently with a splash of plant milk or reserved pasta water to loosen the sauce.