Welsh rarebit Welsh rarebit Welsh rarebit (spelling based on folk etymology) or Welsh rabbit (original spelling) is a dish made with a savoury sauce of melted cheese and various other ingredients and served hot, after being poured over slices (or other pieces) of toasted bread, or the hot cheese sauce may be served in a chafing dish like a fondue, accompanied by sliced, toasted bread. The names of the dish originate from 18th-century Britain. Despite the name, the dish contains no rabbit meat. Recipes for Welsh rarebit include the addition of ale, mustard, ground cayenne pepper or ground paprika and Worcestershire sauce.
Active ingredient as salicylic acid in willow bark or arecoline in areca nuts), because the word "ingredient" in many minds connotes a sense of human agency (that is, something that a person combines with other substances), whereas the natural products present in plants were not added by any human agency but rather occurred naturally ("a plant doesn't have ingredients"). In contrast with the active ingredients, the inactive ingredients are usually called excipients in pharmaceutical contexts. The main excipient that serves as a medium for conveying the active ingredient is usually called the vehicle. Petrolatum and mineral oil are common vehicles. The dosage