This is a Base Sauce that is taking influence from classic French cooking and secret Thai restaurant tricks of the trade to give a sauce that will help make your curry flavours sing.The light vegetable stock helps give umami to the finished curry. The cabbage releases a compound as it cooks which is a natural flavour enhancer with similar qualities to MSG. Celery is also another natural flavour enhancer. This stock is light enough so you get the extra background qualities of these ingredients, but they will not be strong enough that you will notice them in your finished dish.The demerara sugar and vinegar have the same effect as it cooks down, as the spicing essence reputedly devised by Escoffier to lift the flavours of sauces and coulis.Yes, some of these ingredients don’t belong in Indian cooking. But Base sauce didn’t originate in India either!
Keep cooking on a gentle boil until the liquid has reduced by half.
Strain the stock into a heat proof bowl, jug or container.
Base Gravy
Heat the oil in a heavy bottomed pan and add the sliced onion and salt, cook on a moderate heat, with the lid on for 10 minutes, stirring occasionally.
Add the garlic and ginger paste and cook for 30 seconds before adding the green pepper and stirring in.
Lower the heat and add the ground spices. Cook for 30 seconds.
Add the tomato, demerara sugar, malt vinegar and light vegetable stock or water and bring to a boil.
Turn the pan down and let simmer for 15 to 20 minutes after which time the sauce can be blended.
Notes
To use the base gravy, use roughly 160ml diluted with 160ml of water for each single serving. Warming in a pan before being added to the curry
Keyword 30 minute base gravy, base gravy, base sace, Curry Gravy, curry sauce, Secret Indian restaurant sauce