Ingredient

Balsamic vinegar

Two quite different products share the name. Supermarket balsamic is wine vinegar with grape must and often caramel colouring; traditional balsamic from Modena is aged grape must alone, for a decade or more, and is used by the drop.

Sourcing
Check the label for grape must at or near the top of the ingredients. Anything listing caramel colour is a cheap imitation — fine for a marinade, wasted on a salad.
Varieties
Aceto Balsamico Tradizionale di Modena DOP, Balsamic Vinegar of Modena IGP, Balsamic glaze
Quality cues
Should coat the back of a spoon and taste sweet before it tastes sharp. Thin and simply acidic means it is mostly wine vinegar.
Substitutions
Red wine vinegar with a little honey, Sherry vinegar
Storage
Cool, dark cupboard, capped. It does not need refrigerating.
Shelf life
3-5 years, improving rather than spoiling
Nutrition

Per 100 g

Calories
88 kcal
Protein
0.5 g
Fat
0 g
Carbs
17 g
Fibre
— g
Sugars
14.9 g
Sodium
23 mg

From USDA FoodData Central (#172241). Raw, edible portion.