The flavor of this potent brew is fruity with a hint of slime -- er, lime. Its murkiness comes from a generous helping of green fruit juice blend, available at the grocery store in the health- or energy-drinks section; tequila and a dash of lime juice give it a delectable edge. For the fuzzy, mold-colored rims, we used file powder, a Creole seasoning, but green tea powder will work just as well.