Around 1.0 g net carbs per 100 g — fits a keto day comfortably.
For keto, the key number is net carbs per 100 g: if it's under ~5 g, you're fine; over ~10 g, portions matter; over 20 g, skip it.
1.00 g / 100 g
61 kcal / 100 g
Protein: 4.25 g
Fat: 3.38 g
Target carbs: 5–10% of calories, cap ~30 g/day.
A 100 g portion of mustard, prepared, yellow costs you 1.00 g of net carbs. On a typical Keto day with a 30 g carb ceiling, that's 3% of your daily budget.
Pair it with fat and protein to slow glucose response — that's generally good practice regardless of regime.
See the canonical entry for Mustard, prepared, yellow — all regimes, all data:
Open the full Mustard, prepared, yellow profile →