Add the 3 Shallots, 2 Garlic clove and 2 Bird's eye chillies to a mortar bowl. Using a pestle, pound to a smooth paste. Add some coarse Sea salt to act as an abrasive to make the pounding easier.
Put 400 g Chopped tomatoes into a bowl and add the paste, 1 tablespoon Ketchup and 1 tablespoon White wine vinegar. Mix well so that everything is combined.
Notes
Be careful when cutting the chillies. Wear rubber gloves when handling them so you don't get them in your eye after.
If you want to add a little bit of freshness to this, then some fresh chopped mint adds a lovely flavour.
You could make this even quicker by blending all the ingredients together, but we like the chop them finely to leave a bit of texture to the chilli sauce.
If you like a sweeter sauce, then add another pinch of sugar. Taste in once everything is mixed together and then adjust it. The same goes for the salt.