Mash the garlic, capers and anchovies together, either in a mortar with a pestle or on a cutting board with a chefs� knife. Transfer to a bowl if not using a mortar.
Add the mustard and lemon juice, stir to mix well.
Measure the two oils into a cup measure with a pouring spout. Slowly pour a thin stream of oil into the dressing ingredients as you stir vigorously with the pestle or whisk to create an emulsion.
Once emulsified, add a few dashes of fish sauce and whisk until incorporated, taste for seasoning.
To assemble the salad, mix the kale, cabbage, and apples. Liberally dress with garlic-anchovy vinaigrette coating all ingredients evenly and sprinkle with pecorino.
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