Blanched peanuts are groundnut kernels with the thin outer skin (the testa) removed. They are sold as whole blanched kernels or as splits, where the two halves of the kernel have separated.
The main buyers are peanut butter makers, confectionery and chocolate makers, snack and bakery companies, and ingredient processors who make peanut flour, paste or pieces.
How blanching works
Kernels are heated to loosen the skin, then passed through rollers or brushes that rub it off. Air removes the loose skins. Some plants use water blanching instead, where kernels are wetted, the skin is removed and the kernels are dried again.
After blanching, the kernels are colour sorted and often hand picked. Without the skin, damaged and discoloured kernels are much easier to see, so sorting is more effective.
Blanching yields some loss, because skins, broken pieces and rejected kernels are removed. That is one reason blanched kernels cost more than the HPS kernels they are made from.
- Whole blanched: kernels kept intact, graded by count.
- Blanched splits: kernels separated into halves, often for peanut butter and confectionery.
- Blanched pieces or diced: cut kernels for bakery and toppings.
Why buyers choose blanched
- Clean colour: peanut butter and pastes are lighter and more even without skins.
- Less bitterness: the skin carries some bitter and astringent compounds.
- Better sorting: removing the skin lets sorters find mouldy or damaged kernels, which helps lower aflatoxin.
- Ready for processing: the buyer does not need its own blanching line.
Points to check
Blanched peanuts are a processed, ready-to-use product, so food safety controls matter more. Blanching heat is not a kill step for Salmonella unless the process has been designed and validated for that. Ask whether the plant has a validated pasteurisation or roasting step, or whether you will treat the product yourself.
- Blanching efficiency: the share of kernels with skin left on, as a maximum.
- Splits and broken pieces when you order whole kernels.
- Moisture after blanching, especially for water-blanched product.
- Aflatoxin, tested on a properly drawn sample, as covered in aflatoxin limits for peanuts in the EU, US and Middle East.
- Microbiology: total plate count, yeast and mould, Salmonella and E. coli.
- Rancidity: peroxide value and free fatty acid, because skinless kernels oxidise faster.
Packing and shelf life
Without the skin, blanched kernels are more exposed to oxygen and moisture. They are usually packed in vacuum or nitrogen-flushed bags inside cartons, rather than open jute. Shelf life is shorter than for skin-on kernels, so plan your stock and ask for production dates. The packing choices are explained in how peanuts are packed for export.
How Creston & Co handles this
We audit blanching plants in Gujarat, review their sorting and hygiene, and have samples tested for aflatoxin and microbiology at an NABL-accredited lab. To find a blanching unit that fits your spec, ask for a free sourcing review.