It depends on the manufacturer. It can be made simply from squeezed tomatos. Manufacturers sometimes add salt as a preservative. Also onion powder, garlic powder, and other spices can be added.
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Very easy. In a large stock pot, simmer cut tomatoes until boiling. Reduce heat and simmer partially covered for 15 minutes, stiring occasionally. Over a large bowl or another similar stock pot,...
Yes but the taste would differ radically. Puree is a concentrated form of tomatoes that is used for cooking whereas a juice is a diluted form that is used as a drink.
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