Make this recipe a recipe that people in that category can eat. categories: ['vegetarian'], recipe: to make dressing, place the garlic, vinegar, salt, black pepper and cayenne in a blender or food processor fitted with a metal blade. whirl until blended. continuing to whirl, gradually add the oil, drop by drop at first, then in a thinly steady stream. the dressing will thicken. continuing to whirl, add the anchovies or anchovy paste. taste and add more salt, if needed. the dressing can be used right away or covered and left at room temperature. if making the dressing more than 1 day ahead, cover and refrigerate.

Target recipe: in a small bowl, combine the milk and vinegar or lemon juice. let sit for 5 minutes. (this process will produce buttermilk. alternatively, you can just use 1/2 c "real" buttermilk, but i use this method because i never have the real stuff on hand.). meanwhile, combine the remaining ingredients in a blender or food processor. with the blade running, slowly pour in the buttermilk and blend just until thickened (if you over-blend, it will curdle). cover tightly and chill well before serving so the flavors have a chance to meld. dressing will keep for about 4 days (though it may need another whirl in the blender / food processor if it separates).