Tomatillo

Tomatillo (Physalis philadelphica) is a small, round fruit enclosed in a papery husk, typically 1–2 inches in diameter. Native to Mexico and Central America, it is now cultivated in warm climates worldwide. Botanically a fruit, tomatillos are treated as a vegetable in cooking and are widely used fresh in salsas, sauces, and cooked dishes, where they contribute a tart, slightly herbaceous flavor. Raw or cooked, they retain a firm texture and distinctly acidic profile.

One medium tomatillo (approximately 34 g) contains roughly 11 calories, 2.0 g carbohydrate, 0.6 g fiber, and 0.3 g protein. It is a source of vitamin C and contains small amounts of potassium and B vitamins. A standard serving of two to three fruits provides a modest contribution toward daily vitamin C needs. The fiber content is relatively low and unlikely to cause digestive distress in most people.

Nutritional Composition and Acidity

Tomatillos are low in natural sugars and have minimal glycemic impact in typical portion sizes. Their primary nutritional distinction is vitamin C content and phenolic compounds characteristic of the nightshade family. The acidity (pH approximately 3.7–4.0) is notable for those with reflux sensitivity, though tomatillos do not trigger reflux in most people. Overall calorie and macronutrient density is low.

Tolerance and Consumption Guidance

Tomatillos are well tolerated by the general population. As a nightshade, individuals with nightshade sensitivity or those managing certain autoimmune or inflammatory conditions may choose to avoid or monitor their intake, though clinical evidence for widespread nightshade reactivity outside some arthritis populations is limited. Raw or cooked, standard portion sizes (1–3 fruits per meal) pose no safety concern for most people. Allergic reactions to tomatillo are rare but documented; individuals with known Solanaceae family allergies should exercise caution and consult a healthcare provider.