Two tomato pastes can share a Brix figure and a colour reading and still behave completely differently in a sauce. One holds body and clings; the other runs. The difference was decided in the first minutes of production, at a step most buyers have never specified because they have never been told it exists. It is called the break, and it is the parameter that separates a paste that works in ketchup from a paste that works in a bright tomato sauce.
What happens at the break
Fresh tomatoes contain enzymes that break down pectin — the same pectin that gives a paste its body. The moment the fruit is crushed, those enzymes go to work. The break step is the heating applied immediately after crushing, and its purpose is to decide how much of that enzyme activity is allowed before it is stopped.
Hot break heats the crushed fruit quickly to a high temperature, inactivating the enzymes almost at once. Pectin is preserved, and the paste that comes out of evaporation is thick and holds its body.
Cold break holds the fruit at a lower temperature for longer. Enzyme activity continues for a time before inactivation, some pectin is lost, and the resulting paste is thinner — but it keeps a brighter red and more of the fresh-tomato flavour that the gentler treatment protects.
Viscosity against colour
The trade-off is a straight one. Hot break gives body and gives up some vividness. Cold break gives vividness and gives up some body. Neither is the better paste; each is the better paste for a particular product.
Ketchup, thick sauces and pizza sauce need cling and mouthfeel, and hot break delivers that from the paste itself rather than from added thickeners. Products where colour leads — a bright pasta sauce, a soup, a ready meal where the tomato has to look fresh — often prefer cold break, building any body they need through the rest of the recipe.
Putting body on paper: Bostwick
Consistency needs a number, and the trade uses the Bostwick value: the distance a standardised sample flows along a trough in a set time, measured at a standardised dilution of 12 °Brix so that pastes of different concentration can be compared. A shorter distance is a thicker paste.
Hot break paste typically reads in the region of 3 to 8 cm at 12 °Brix. Cold break reads higher, typically 7 to 12 cm. The overlap in the middle is real — a hot break at the loose end and a cold break at the firm end can meet — which is exactly why the specification should state both the break type and the Bostwick range rather than either alone.
Why it cannot be fixed later
The break happens once, at the start of the line, during the campaign. Its effect on pectin is permanent. Further concentration does not turn a cold break paste into a hot break one; the pectin that would give it body is already gone. And a hot break paste cannot recover the colour it traded for viscosity.
This has a practical consequence for timing. The paste a buyer receives in March was made in August, with a break decision taken then. A buyer who discovers in March that they needed the other type has a season to wait. The brief has to say hot or cold before production, which in this category means before the summer.
What we do
TeraVella works in tomato products as a sourcing partner — we do not claim to own a processing plant or an aseptic line. We verify a producer that runs the break process your product requires, write the break type and the Bostwick range into the specification alongside the Brix band and colour parameters, collect batch analyses and manage documented shipment in aseptic drums or retail packs. We hold ISO 9001, ISO 22000 and ISO 27001 and make no organic or other certification claim. Volumes and prices are confirmed at quotation.
