A gerbil is a small mammal of the order Rodentia. Once known simply as  desert rats , the gerbil subfamily includes about 110 species of African, Indian, and Asian rodents, including sand rats and jirds, all of which are adapted to arid habitats.
Vermouth, quinquina and americano are also fortified wines. Fortified means the alcohol percentage of the wine has been raised through the addition of spirits (a fairly neutral grape brandy is ideal in most cases). Almost all these wines have a white wine or mistelle base.
A style called Rainwater is one of the largest selling styles of Madeira in the United States. This style of wine is lighter and similar in sweetness to Verdelho, but can be expected to be made from Negra Mole, and is primarily used as an apÃ©ritif.