Tartar sauce has 350 kcal and 34 g fat per 100 g. The mayo-pickle base adds 53 calories per tablespoon (15 g). Often served alongside already calorie-dense fried fish. Portion errors for calorie-dense foods reach 50–200% (Almiron-Roig et al., Appetite 2013). Weigh the sauce separately from the fish.
How should I track Tartar sauce?
Small amounts of Tartar sauce add up faster than most people realize. A systematic review (Whitton et al., Adv Nutr 2022) found that condiments are among the most frequently omitted items in food logs — skipped 1–80% of the time. A tablespoon of mayo or dressing can add 50–100 calories, and most people use two or three tablespoons without measuring. The fix is simple: keep a teaspoon or scale near your plate and measure once. Sauces and dressings are often the hidden reason a "healthy" salad ends up at 600+ calories.