A quick savoury stir-fry sauce.
All the ingredients are the sort of stuff that is generally lurking in the back of the kitchen cupboards and/or fridge - in my kitchen anyways.
And cause its not from a jar premade, you can juggle the balance of ingredients to your own taste.
Salted fermented black beans are available from Chinese supermarkets.
This makes enough for a stirfry to feed 3-4 people.