1 kg yellow, orange or green tomatoes , chopped, or 500g cherry or plum tomatoes, halved plus 500g tinned plum tomatoes
200 ml red wine vinegar
70 g soft brown sugar
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Bizarrely enough for a chef, I really do take my hat off to Heinz, who have become the global brand of quality in the ketchup world. It’s such an everyday cupboard product that you’ve probably never thought to make your own. But if you’re growing tomatoes in the garden, or you catch sight of some really beautiful ones at the market in summer, just think how much of a treat it would be to offer your family or guests homemade ketchup. It’s great fun to make. And you can make different colours of ketchup using just yellow, orange or green tomatoes – simply exchange the cherry and tinned tomatoes for the same amount of your chosen coloured ones.
Place all the vegetables in a large heavy-bottomed saucepan with a big splash of olive oil and the ginger, garlic, chilli, basil stalks, coriander seeds and cloves. Season with the pepper and a good pinch of salt.
Cook gently over a low heat for 10 to 15 minutes until softened, stirring every so often. Add all the tomatoes and 350ml of cold water. Bring to the boil and simmer gently until the sauce reduces by half.
Add the basil leaves, then whiz the sauce in a food processor or with a hand blender and push it through a sieve twice, to make it smooth and shiny. Put the sauce into a clean pan and add the vinegar and the sugar. Place the sauce on the heat and simmer until it reduces and thickens to the consistency of tomato ketchup. At this point, correct the seasoning to taste.
Spoon the ketchup through a sterilized funnel into sterilized bottles, then seal tightly and place in a cool dark place or the fridge until needed – it should keep for six months. Great served with steak and chips.