Pepitas — Cups to Grams

Pepitas vs Pumpkin Seeds: The Weight Confusion Explained

The single most important thing to understand about measuring pepitas is the distinction between hulled seeds (pepitas) and whole seeds (with white hull intact). This distinction drives a factor-of-2 difference in weight per cup that can completely ruin a recipe if misunderstood.

Pepitas (hulled): The flat, dark green seed kernel extracted from the white fibrous hull. A slim, flat oval shape approximately 10mm long. Weight: 64g per cup. These are what Mexican recipes and most "pumpkin seed" nutrition labels mean. They are sold raw or roasted, salted or unsalted, and are the form used in sauces (ground) and as garnishes.

Whole pumpkin seeds (in-shell): The white-hulled seed as it comes from a carving pumpkin or sugar pumpkin. Fibrous, stringy texture that requires roasting to become palatable. Weight: approximately 130g per cup — double the hulled weight, because the hull itself constitutes roughly 50% of the total weight. These are what you clean off the interior of a Halloween pumpkin. They can be roasted and eaten whole (hull included), but the texture is chewier and less refined than hulled pepitas.

When a US recipe says "pumpkin seeds," it almost always means hulled pepitas — the green, smooth seeds sold in bulk bins and health food stores. When a UK recipe says "pumpkin seeds," it may mean either form — check the weight specified to determine which the recipe author intended. A quarter cup in a salad recipe weighing 16g? Hulled pepitas. A quarter cup in a recipe specifically directing you to roast with oil at high heat weighing 33g? Whole in-shell seeds.

Pepitas in Mexican Cuisine: Specific Ratios

Pepitas are among the oldest cultivated foods in the Americas, with archaeological evidence of use in Mesoamerica dating to 7,500 BCE. Their role in Mexican cuisine is not incidental — they are a primary source of fat, protein, and thickening in pre-Columbian sauces that predate contact with any Old World ingredients.

Pipián verde is the direct predecessor of modern mole sauces. The base is ground raw pepitas forming a thick paste with tomatillos, green chiles (serrano or jalapeño), garlic, onion, and epazote. Standard batch for 4 servings: ½ cup (32g) raw pepitas, ground dry until fine, then toasted in hot lard or oil until fragrant (1–2 minutes), then blended with 500g tomatillos and other ingredients. The ground pepitas act as both thickener and fat source, giving the sauce a characteristic rich, slightly grassy, nutty body.

Mole verde uses pepitas in combination with multiple seeds and chiles. A traditional Oaxacan batch for 8 uses ¼ cup (16g) raw pepitas alongside similar amounts of squash seeds and sesame seeds. The multi-seed combination creates a more complex flavor and texture than single-seed pipián. The pepitas specifically contribute the bright green color when raw and not over-toasted.

Salsa de pepita is a simpler, Yucatecan preparation: toasted and ground pepitas (½ cup / 32g) blended with habanero chiles, roasted tomatoes, and annatto paste. Served with grilled fish or tamales. The pepitas provide all the body and fat — no oil is added separately.

Toasting Pepitas: Technique and Weight Impact

Toasted pepitas are substantially more flavorful than raw — the Maillard reaction and pyrazine formation during toasting create deep, nutty, slightly smoky compounds absent in raw seeds. For most garnish and snack applications, toasting is strongly recommended. For sauce applications (pipián, mole), whether to toast before grinding depends on the regional tradition — Yucatecan sauces typically use toasted pepitas; Oaxacan pipián more often uses raw.

Stovetop dry-toast method: Medium heat, dry pan (no oil — pepitas contain 44g fat per 100g and self-baste). Add in a single layer. Stir or shake every 30 seconds. Listen for popping sounds starting around 2 minutes — steam escaping from the seed. Continue until most seeds are tan-golden with some green-brown spotting, about 4–6 minutes total. Remove immediately from pan. The fat content means they continue cooking from residual heat if left in the pan — transfer to a plate or bowl immediately.

Oven method: 325°F/165°C, single layer on a baking sheet, 8–10 minutes, stirring halfway. More even results for large batches. Check at 7 minutes — individual oven temperatures vary.

Weight loss during toasting: Approximately 4–6% moisture evaporates. 64g raw pepitas (1 cup) → approximately 60–61g after toasting. The volume also decreases slightly as moisture leaves the seeds. For sauce recipes that specify toasted weight, weigh after toasting. For garnish applications, the 3–4g difference per cup is negligible.

Pepitas Conversion Table

Common Questions About Pepitas

• How many grams in 1 cup of pepitas?

  1 cup raw hulled pepitas = 64 grams. Whole pumpkin seeds in their white shells weigh 130g per cup — the hull is roughly 50% of the total weight. Always verify whether a recipe means hulled pepitas (64g/cup) or whole seeds (130g/cup) before measuring. Mexican recipes calling for "pepitas" always mean hulled.

• Are pepitas the same as pumpkin seeds?

  Pepitas are hulled pumpkin seeds — the flat green kernel without the white fibrous shell. "Pumpkin seeds" can mean either hulled or whole depending on context. The weight difference is dramatic: 64g/cup (hulled) vs 130g/cup (whole in-shell). In US commercial products, "pumpkin seeds" in bulk bins almost always means hulled pepitas unless otherwise specified.

• How do you toast pepitas without burning them?

  Dry pan, medium heat, stir constantly. They make popping sounds after 2–3 minutes as steam escapes — this is normal. Total time 4–6 minutes. Remove when tan-golden with some spotting. Transfer to a plate immediately — residual heat in the pan continues cooking them. Oven method: 325°F/165°C for 8–10 minutes, stir at halfway. Both methods reduce weight by 4–6%.

• What is pipián verde and how much pepitas does it use?

  Pipián verde is a pre-Columbian Mexican green sauce thickened with ground pepitas. A standard batch for 4 uses ½ cup (32g) raw pepitas, ground dry until fine, then cooked with tomatillos, green chiles, garlic, and epazote. The ground pepitas provide both the sauce's body and its primary fat source. It is the direct ancestor of mole sauces.

• Are pepitas nutritious?

  Yes, notably. Per 1 cup (64g): approximately 190mg magnesium (~50% RDA), 10g protein, significant zinc (5mg, ~50% DV), 4.3mg iron (~24% DV), and 44g healthy fat. The 1-ounce (28g) serving is standard. They are also a notable source of tryptophan (precursor to serotonin) and zinc, which supports immune function and testosterone metabolism. Store refrigerated — high fat content causes rancidity at room temperature within weeks.

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