Yes — Lemon curd is ultra-processed.
The product is classified as ultra-processed (UPF) because it contains lemon oil, which has been pre-identified as a UPF ingredient, as well as industrial additives such as agar (a gelling agent) and sulphur dioxide (a preservative). These extracted/isolated additives and flavoring agents are characteristic of NOVA ultra-processed foods.
Other sauces, condiments & spreads Nomi has checked — these ones aren't ultra-processed.
Custom - Strawberry Jam
Hartley's
Not UPF
Lemon curd
Tiptree, Wilkin & Sons Ltd.
Not UPF
Taste the Difference Bitter Seville Orange Marmalade
Sainsbury's, Taste the difference
Not UPF
Mackays Seedless Bramble Preserve 340G
Mackays
Not UPF
pure Canadian maple syrup
Asda
Not UPF
Rapberry Jam
Sainsbury’s
Not UPF
Maple Syrup
Asda
Not UPF
Cinnamon honey
Rowse
Not UPF
Chocolate Hazelnut Spread
Pip & Nut
Not UPF
Blueberry conserve
Sainsbury's
Not UPF
Yes — Lemon curd by Waitrose is ultra-processed, so it counts as a UPF (ultra-processed food). The product is classified as ultra-processed (UPF) because it contains lemon oil, which has been pre-identified as a UPF ingredient, as well as industrial additives such as agar (a gelling agent) and sulphur dioxide (a preservative). These extracted/isolated additives and flavoring agents are characteristic of NOVA ultra-processed foods.
Nomi flags 3 ingredients in Lemon curd as ultra-processed markers: salt-concentrated lemon juice (8%), lemon oil, sulphur dioxide. See the full ingredient breakdown above for what each one is.
Ultra-processed foods (UPFs) are industrial formulations made with ingredients and additives you wouldn't find in a home kitchen — such as emulsifiers, artificial flavourings, colourings and modified starches. The classification is based on the NOVA system used by researchers and dietitians worldwide.
Scan any barcode — or photograph the ingredients label — with the free Nomi app for iOS and Android. You'll get an instant ultra-processed verdict with every ingredient explained in plain English.
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Product information comes from public databases and Nomi's own analysis, and may contain errors. Always check the packaging. Ultra-processed classification is based on the NOVA food processing system.