Concentrated tomato purée

Use 2.5–3 times the weight and simmer until thick and darkened; it is much thinner and less intense, so the dish will need longer reduction and a little more salt or sugar.

Use 3–4 times the weight, blend if smoothness is needed, then simmer down by half or more; the result is more watery and fresher-tasting.

Use 4–5 times the weight, chop and cook down until thick; expect more liquid, longer cooking and a less concentrated sweetness.