Dairy
Colby-Jack
Colby-Jack (also called Co-Jack or Marble Jack) is an American marbled cheese made by combining orange Colby curd with white Monterey Jack curd before pressing, producing a distinctive orange-and-ivory swirl. Both components are mild, semi-soft to semi-hard cow’s-milk cheeses, so the blend stays buttery, gentle, and highly meltable. It is a popular sandwich, tray, and shredded melting cheese in North America, chosen as much for its marbled look as for its approachable flavour. The style depends on the contrast of the two pastes rather than strong ageing or rind development.
Also known as: Co-Jack, Marble Jack
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Characteristics
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Grading systems
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History
Monterey Jack was established in California as a mild white melting cheese, providing the ivory half of the marbled style.
Colby cheese was created in Wisconsin as a washed-curd mild alternative to cheddar, later forming half of the Colby-Jack blend.
American creameries began pressing Colby and Jack curds together as Colby-Jack or Co-Jack for retail novelty and mild flavour.
Supermarket blocks and deli loaves made Colby-Jack a nationwide sandwich and snack cheese.
Pre-shredded Colby-Jack became a staple for home melting and food-service nachos and casseroles.
Artisan and organic lines offered higher-milk-solids Colby-Jack while industrial marbled blocks remained dominant.