Diamond Foods-owned Kettle has expanded its crisp portfolio in the US to include two "healthy" variants.

Aged White Cheddar and Sea Salt & Vinegar Baked 100-calorie packs have "65 per cent less fat than regular potato chips", the snack maker said yesterday. Each bag contains three grams of fat.

"With a serving of about 15 chips per bag, Kettle Brand Baked 100-calorie packs are a real food solution," said Julie Dunmire, Kettle brand marketing director.