01 -
Warm up some vegetable oil in a pan on medium. Toss in the onions and cook until soft, but avoid letting them brown.
02 -
Mix in the curry powder and let it cook for about a minute, so the flavor really pops.
03 -
Pour in the tomato puree, add the vinegar, honey (or sugar), Worcestershire sauce, and salt. Let it gently start simmering.
04 -
Simmer the sauce for 10 minutes. If it starts looking too thick, stir in a splash of water here and there.
05 -
Give it a taste and tweak the sweetness or spice to your liking. Too tangy? A pinch of baking soda helps even it out.
06 -
Blend it until extra smooth. Pour over sliced German sausages and top with a bit more curry powder for garnish.