Mustard (condiment) The second element comes also from Latin "ardens", (hot, flaming). It was first attested in English in the late 13th century, though it was found as a surname a century earlier. Archeological excavations in the Indus Valley (Indian Subcontinent) have revealed that mustard was cultivated there. That civilization existed until about 1800 BC. The Romans were probably the first to experiment with the preparation of mustard as a condiment. They mixed unfermented grape juice (the must) with ground mustard seeds (called "sinapis") to make "burning must", "mustum ardens" — hence "". A recipe for mustard appears in "De re coquinaria",
Pressure cooking and some other foods like sponge puddings and Christmas puddings are typically timed according to their weight. Frozen foods need extra cooking time to allow for thawing. When pressure cooking at 1 bar/15 psi (gauge), approximate cooking times are one minute for shredded cabbage, seven minutes for boiled potatoes (if cut small, not diced) and three minutes for fresh green beans. If the pressure is released naturally after timing "(see Pressure release methods for details)," cooking times are even shorter. Food cooks more quickly when cut into smaller pieces. Some recipes may require cooking at lower than 1 bar/15 psi