@context(p=1) density
    # p density of the liquid (mass/volume)
    [volume] -> [mass]: value * p
    [mass] -> [volume]: value / p
@end

@group VolumetricMeasurementExtras
    imperial_ounce = ounce
    imperial_pound = pound
    imperial_tablespoon = imperial_cup / 16 = imperial_tbsp = UK_tablespoon = UK_tbsp
    imperial_teaspoon = imperial_cup / 48 = imperial_tsp = UK_teaspoon = UK_tsp
    # https://en.wikipedia.org/wiki/Cup_(unit)
    metric_cup = 250 * ml
    metric_tablespoon = 15 * ml = metric_tbsp
    metric_teaspoon = 5 * ml = metric_tsp
    aus_tablespoon = 20 * ml = aus_tbsp
    aus_pint = 570 * ml
    jp_cup = 200 * ml
@end