No-Bake Mocha Liqueur Balls

Yield:	36 Servings
Categories:	Cookies, Chocolate

3	c	Vanilla wafer crumbs; about 250 g box
1/4	c	Water
3	tb	Instant coffee
4	oz	Semisweet chocolate
1/2	c	Tia Maria
1 1/2	c	Sifted powdered sugar
		Pecan halves; optional