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.
Pour a little bit of dry vermouth in a chilled martini glass and swirl to coat the inside of the glass. Dispose of excess vermouth. In a shaker full of ice, gently swirl or stir the vodka before straining into glass. Serving suggestion: Garnish with olives or lemon twist and add rocks if you like.