Tahini — Cups to Grams

Understanding Tahini Density and Separation

Tahini is ground sesame seed paste — 100% sesame, nothing added in quality products. The density of 240g per cup reflects a blend of sesame oil (the lighter fraction) and sesame solids (ground sesame flesh, the heavier fraction). A freshly opened, well-stirred jar produces consistent 240g-per-cup measurements. An unstirred, separated jar with a top layer of pure oil and a stiff solid bottom will measure very differently — a cup scooped from the top could weigh as little as 210g (mostly oil); a cup scraped from the solid bottom could weigh 270–280g.

This is why weighting tahini is significantly more accurate than volume measurement, particularly for baked goods and sauces where the fat-to-solid ratio affects texture. 15g per tablespoon is the reliable reference for well-stirred tahini of any brand.

Separation is normal and not a sign of spoilage. It's simply the physics of a non-emulsified suspension of heavier sesame solids in lighter sesame oil. Some brands add emulsifiers to prevent separation; natural, minimal-ingredient tahini always separates. Store upside down to keep oil distribution more even. To stir: use a narrow butter knife or chopstick to work through the paste from the bottom of the jar upward, folding in the separated oil.

Tahini in Hummus: The Ratio Guide

The tahini-to-chickpea ratio is the single biggest variable in hummus recipes. American cookbook recipes tend to use less tahini than Middle Eastern preparations. Here's the spectrum:

For the high-tahini Israeli-style hummus made famous by Yotam Ottolenghi and similar restaurants, the technique matters as much as the ratio. Process the chickpeas and tahini for 5+ minutes in a food processor, adding ice water to produce a lighter, fluffier texture. The emulsification of tahini with water creates a temporary emulsion that becomes creamy and white. Add the water gradually while the processor runs — this technique produces the silky, aerated texture that differentiates restaurant hummus from grocery store paste.

Tahini Dressings and Sauces: Dilution Ratios

Pure tahini (240g/cup) is too thick and intensely flavored to use as a sauce. Tahini dressing requires dilution with water or citrus juice. Water paradoxically causes tahini to seize initially (become thicker) before thinning as more water is added — a counterintuitive behavior caused by the disruption of sesame oil hydrophobic interactions. Add water gradually and keep whisking through the initial seizing stage.

Standard tahini sauce (for falafel, salads, bowls): 60g tahini (4 tbsp) + 60g water + 30g lemon juice + 1 garlic clove + salt. This yields approximately ¾ cup of sauce at a pourable consistency. For a thicker sauce, use less water. For dressing, add more lemon juice and a pinch of cumin. The sauce keeps refrigerated for 5–7 days and thickens on standing — thin with water before serving.

Common Questions About Tahini

• How many grams in a tablespoon of tahini?

  1 tablespoon of well-stirred tahini weighs 15 grams. 1 teaspoon = 5 grams. ¼ cup = 60 grams. ½ cup = 120 grams. 1 cup = 240 grams. These figures apply to homogeneous, fully stirred tahini. Unstirred, separated tahini can measure 10–15% different depending on whether you scoop from the oil layer or the solid layer.

• How much tahini is in a standard hummus recipe?

  Standard American hummus recipes use 2–4 tablespoons (30–60g) per 425g can of chickpeas. Middle Eastern restaurant-style hummus uses 6–8 tablespoons (90–120g), giving a much richer, nuttier flavor. The high-tahini style requires blending for 5+ minutes with ice water to develop the creamy emulsified texture.

• Is tahini the same as sesame paste?

  Tahini and sesame paste are both ground sesame, but they differ importantly. Middle Eastern tahini is made from hulled, raw or lightly roasted white sesame seeds — pale, mild, creamy. Chinese sesame paste (zhima jiang) is made from fully toasted sesame seeds — dark brown, much more intensely flavored, similar to deeply roasted peanut butter. They are not interchangeable in most recipes. Chinese sesame paste can substitute in dishes specifically calling for it (dan dan noodles, some cold sesame noodles), but not in hummus or Middle Eastern dressings.

• How long does tahini last after opening?

  Opened tahini keeps at room temperature for 3–4 months and refrigerated for 6–12 months. Refrigeration causes it to stiffen considerably — bring to room temperature before using. The high sesame oil content can go rancid over time; smell tahini before use. Fresh tahini has a pleasant nutty-sesame aroma; rancid tahini smells bitter and chemical. Refrigeration significantly extends shelf life.