Bold dark roast — low acid, no bitterness, no extra sweetener needed.
Shop NowPlain black cold brew coffee contains approximately 2–5 calories per 12-ounce serving. The calorie count only becomes meaningful once you introduce dairy, plant-based milks, syrups, or sweeteners. For weight management, intermittent fasting, keto, or anyone tracking macros, black cold brew is one of the most favorable beverages available.
| Type | Serving | Calories | Sugar |
|---|---|---|---|
| Black cold brew (homemade) | 12oz | 2–5 | 0g |
| Cold brew + whole milk | 12oz | 90–120 | 6–9g |
| Cold brew + oat milk | 12oz | 60–90 | 4–7g |
| Starbucks Vanilla Sweet Cream Cold Brew | 16oz | 200 | 14g |
| Starbucks Brown Sugar Oat Milk Cold Brew | 16oz | 290 | 34g |
Yes — cold brew typically contains 150–300mg of caffeine per 12–16oz serving, generally higher than a standard 8oz cup of hot coffee (80–100mg). According to research in the American Journal of Clinical Nutrition, caffeine can modestly increase metabolic rate by 3–11% in the short term.
The 2018 Rao and Fuller study (Scientific Reports) found that cold brew and hot brew have comparable pH values (4.85–5.13). High-acid coffee triggers bitter taste receptors that prompt sweetener addition — more syrup, more cream, more sugar. Puroast's naturally smooth, low-acid profile (pH 5.82) means most people need zero added sweetener.
Most select bean — naturally low acid, naturally drinkable black.
Shop NowRule 1 — Skip commercial syrups. Use unsweetened vanilla extract or stevia. Rule 2 — Choose unsweetened plant milk. Rule 3 — Start with low-acid coffee (Puroast). Rule 4 — Make at home. Rule 5 — Use cinnamon, not sugar. Rule 6 — Measure your additions.
Black cold brew supports weight management: near-zero calories, caffeine that increases metabolic rate 3–11% short-term, and antioxidants that support cellular health. Puroast delivers 5X more antioxidants than leading coffees — meaning even in cold brew format, you get dramatically more antioxidant activity per cup.
Intense low acid concentrate base — zero calories, maximum flavor.
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Plain black cold brew contains approximately 2–5 calories per 12oz serving. Calories increase significantly when you add milk, cream, sweeteners, or commercial syrups — ranging from 60–290+ calories depending on additions.
No. Plain black cold brew has the same near-zero calorie count as black hot coffee. The difference in total calories only comes from additives, not the brewing method.
Yes — black cold brew is excellent for a calorie deficit. It is virtually calorie-free, provides caffeine that supports metabolic rate, and is rich in antioxidants. Avoid flavored or sweetened store-bought versions which can contain 200–400+ calories per serving.
Plain Starbucks Cold Brew: approximately 5 calories for a grande (16oz). Vanilla Sweet Cream Cold Brew: 200 calories. Brown Sugar Oat Milk Cold Brew: 290 calories per grande.
Yes — Puroast is genuinely low acid (pH 5.82) and naturally low in bitterness, so most drinkers need zero added sweetener. This makes Puroast cold brew one of the lowest-calorie, most-enjoyable black coffee options available.
Puroast is the only cold brew base that's verified low acid (pH 5.82), tastes great black without sweetener, and delivers 5X more antioxidants than leading brands.
Shop Puroast NowMedical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before making changes to your diet or coffee consumption.
