October 29, 2026 . • All Blog Posts • News

Raw almonds vs. roasted almonds: what the roasting process changes for food manufacturers

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Roasting changes moisture and shelf life as well as color and flavor. A guide for R&D teams and procurement managers choosing between raw and roasted almonds.

Quick Answer

Raw almonds are the starting material. Roasted almonds are the same kernels taken through dry roasting, the step that builds color and roast flavor and makes them crunchier. The heat also lowers moisture and shortens shelf life. The Almond Board of California puts the range that best preserves almond microstructure and shelf life at 265°F to 293°F (130°C to 145°C), and it links roast temperature directly to acrylamide formation. Treehouse specifies roasted almonds below 3% moisture with a 12-month shelf life in vacuum packaging, against up to 24 months for natural whole almonds. Raw almonds fit applications where the kernel is processed further or where neutral flavor matters, such as beverages, batters, and flour. Roasted almonds fit cereals, snacks, and confectionery, where roast flavor and crunch are part of the product.

Buyers often treat roasting as a flavor decision. It also moves moisture, shelf life, and packaging. The same kernel behaves differently in a batter than in a cereal bowl, depending on whether it was roasted and how far the roast went.

The differences end up as numbers on a specification sheet, and they are worth settling before a purchase order goes out.

Raw almonds vs roasted almonds: what the terms mean in a specification

In commercial almond sourcing, raw means the almonds have not been roasted. They may still have gone through pasteurization or another approved food safety treatment.

Natural almonds keep their skin. Blanched almonds have had the skin removed. Roasted almonds go through one more step, the one that develops flavor, color, and texture. Treehouse California Almonds dry roasts with controlled heat instead of oil.

For an industrial buyer, natural, blanched, pasteurized, and roasted are four separate products, and the specification has to say which one it is buying.

What dry roasting changes in the almond

The Almond Board of California describes roasting as a heat process that changes texture, color, and flavor: the kernel comes out crunchier and browner, with a roast flavor. Color, texture, and flavor are the changes you can see. Heat also starts chemical reactions and alters how the kernel handles moisture and oxygen.

Source: Almond Board of California: Almond Processing Effects

Color and flavor development

Roast flavor comes mostly from the Maillard reaction, the non-enzymatic browning that happens when sugars and amino acids meet heat. Time and temperature set the roast level together, and the same degree of roast is reachable at different temperatures by trading one for the other: longer at lower heat, shorter at higher heat. For almond butter, Treehouse specifies roast level on the Agtron color scale, with natural dry roasted butter in the 45 to 55 range.

Source: Almond Board of California: Almond Processing Effects

Source: Treehouse Almonds: Almond Butter Wholesale

Texture and crunch

Roasting leaves the almond with a crisp, crunchy exterior. That texture is why roasted almonds get picked for products where crunch counts as a sensory attribute. Test the crunch in the finished product, since later processing steps can change it.

Moisture

Roasting takes moisture out. Treehouse specifies below 3% for its natural dry-roasted whole almonds. Low moisture keeps a roasted almond crisp, though it does not make the kernel inert, so check moisture against the specification on every lot.

Source: Treehouse Almonds: Whole Almonds Wholesale

Shelf life and oxidation

Roasting raises oxidation risk. The Almond Board states that cut and roasted forms have a shorter shelf life than natural whole almonds, and that high roasting temperatures start some lipid oxidation. Treehouse rates natural whole almonds at 24 months, natural sliced almonds at 18 months, and roasted vacuum-packed almonds at 12 months. The Almond Board recommends packing roasted nuts promptly after cooling, in high-barrier packaging, to limit oxidation during storage.

Source: Almond Board of California: Almond Processing Effects

Source: Treehouse Almonds: Whole Almonds Wholesale

Roast temperature and acrylamide

Acrylamide is not found in raw almonds. It forms during roasting. The Almond Board reports that roast temperature has a much larger effect on acrylamide than roasting time, and that roasting below 295°F (146°C) to reach a light or medium roast minimizes its formation. The same guidance favors 265 to 293°F because it preserves the almond microstructure and maximizes shelf life. Roast profile affects food safety as well as flavor, so ask suppliers for their roast temperature range.

Source: Almond Board of California: Almond Processing Effects

Raw almonds vs roasted almonds: matching the form to the application

Application fit usually comes down to one question: is roast flavor part of the product, or something the formula has to keep out?

Application	Typical Almond Format	Key reason
Almond milk and non-dairy beverages	Raw, blanched unroasted almond butter	Neutral flavor and pale color; roast notes compete with the base
Ready-to-eat cereals and granola	Roasted sliced or whole	Roast flavor and crunch that holds in milk
Trail mixes and snack products	Roasted whole	Roast flavor and crunch are the product attributes
Chocolate and confectionery	Dry roasted, or blanched for light chocolate	Roasted crunch holds through enrobing; blanched keeps white and milk chocolate neutral in color
Ice cream and frozen desserts	Roasted diced (12/8 or 22/8)	Crunch contrast against a cold base; Treehouse offers dry-roasted diced in both sizes
Batters, doughs, and gluten-free flour blends	Raw (natural or blanched) flour or sliced	Neutral flavor and no additional roast variable in the formula
Light-colored baked goods	Blanched raw flour	Keeps the product color neutral
Products requiring the longest shelf life	Raw natural whole almonds	Up to 24 months at Treehouse, compared with 12 months for roasted vacuum-packed whole

Source: Almond Board of California: Almond Processing Effects

Source: Treehouse Almonds: Diced Almonds Wholesale

Specification parameters that change between raw and roasted

Moving a specification from raw to roasted changes several parameters at once. Moisture, shelf life, packaging, and roast control are the ones that affect purchasing, storage, and production.

Parameter	Raw (natural)	Dry roasted
Moisture	Below 6%	Below 3%
Shelf life, whole almonds	Up to 24 months	12 months (vacuum packed)
Shelf life, sliced almonds	18 months	12 months (vacuum packed)
Packaging	Per specification	Vacuum packed; high-barrier packaging recommended
Roast control	Not applicable	Time and temperature; Agtron for almond butter

Source: Treehouse Almonds: Whole Almonds Wholesale

Source: Treehouse Almonds: Sliced Almonds Wholesale

Peroxide value belongs on the certificate of analysis for every roasted lot. It is the earliest indicator of lipid oxidation and the clearest check on a shelf life claim.

Treehouse Almonds: dry-roasted almonds across the product range

Treehouse dry roasts the formats that roasted applications use most, and the roast profile is one of the specification variables the company controls at the source. Dry-roasted products come as whole, sliced, slivered, diced, halves, flour, and butter.

Natural dry-roasted whole almonds, for example, come in 20/22 to 36/40 AOL with serious damage below 2% and moisture below 3%. Natural dry-roasted halves specify at least 80% intact halves, no more than 20% broken pieces, and serious damage below 2%.

Source: Treehouse Almonds: Almond Halves, Sliced, Diced or Whole

Roasted sliced almonds ship vacuum packed with a 12-month shelf life. Dry-roasted diced almonds in 12/8 and 22/8 sizes hold moisture below 3%. Almond butter comes in natural dry-roasted form at Agtron 45 to 55, and natural roasted almond flour is available for baking applications.

For manufacturers that need a roast profile outside the standard range, Treehouse works with R&D teams to set roast level, moisture target, and packaging before production begins. Certifications include BRC Global Standards, Kosher, Halal, CCOF (organic), Bee Friendly Farming, Sedex, UL, EcoVadis, and CASP. Full details are on the food safety and quality systems page.

Source: Treehouse Almonds: Sliced Almonds: The Ingredient That Scales the Industry

Source: Treehouse Almonds: Food Safety & Quality Systems

Choosing the right almond starts with the application

Roasting is one of the variables that decides which almond an application can use, because flavor, texture, moisture, and shelf life all move with it.

For a food manufacturer, the choice between natural and roasted almonds comes down to how those characteristics behave in the finished formulation. A neutral almond for a plant-based product and a crunchy inclusion for cereals or confectionery call for different specifications, and the right one supports product quality and keeps the line consistent.

At Treehouse California Almonds, we help manufacturers turn ingredient requirements into practical sourcing solutions.