sherry vinaigrettte/gastrique

Using for lamb rack, duck leg confit. Works well with very fatty proteins. 1 cup sugar 1 cup sherry vinegar 2 shallot brunoise 1 garlic clove, peeled and minced Lamb, duck etc stock-3 qts Unsalted butter, 1tb Place sugar in heavy bottom pot and slowly bringa light caramel color. The darker the sugar becomes the more bitter the sauce will be. Once the sugar is ready, add vinegar. Let dissolve and then reduce by 3/4's. Add shallots, garlic and stock. Reduced to desired consistency. Pull off fire and add butter. Cool slightly.