Pastis refers to a licorice-flavored aperitif which is very popular in the south of France. It is similar to pernod, this clear, strong (90 proof), It is usually mixed with water, which turns it whitish and cloudy.
Pastis also refers to any of various yeast-leavened pastries of southwestern France such as pastis Beranais, which is flavored with brandy and orange-flower water.
Pastis is pronounced "pas-tees"