Thai Iced Coffee

1/2 pound dark roast ground coffee
8 cups cold water
1/2 teaspoon vanilla extract
1 (14 ounce) can sweetened condensed milk

Stir together ground coffee and cold water in a pitcher until well combined. Let stand at room temperature for 12 hours.

Pour coffee mixture through a large, fine wire mesh strainer into a Dutch oven or other large container, discarding grounds. Clean strainer; place a coffee filter or double layer of cheesecloth in strainer. Pour coffee mixture through lined strainer into a pitcher. Add vanilla extract. Cover and store in refrigerator up to 1 week, if desired.

Stir together coffee mixture and sweetened condensed milk. Serve over ice.