Thinly slice the cabbage and add to a small saucepan of boiling water. Simmer for 2-3 minutes until fork tender, drain completely and set aside to steam dry.
Step 2
Melt the butter in a skillet over a low/medium heat. Thinly slice the garlic and add to the skillet along with the capers and roughly tear in the anchovies. Sweat for a minute or two until fragrant and the anchovies have dissolved.
Step 3
Add the cabbage, lemon juice and chili flakes. Stir well and cook for a few minutes more so that the cabbage is tender and well coated in the butter and seasonings.