Make the sauce
1 batch makes about 200 g — enough for 1 Detroit panToast the unpeeled garlic in a dry pan over medium heat, turning it, until the skins blacken in spots and the cloves soften, about 8 min. Peel and mince it, then whisk it with everything else. Let it sit 30 min so the dill softens. Keeps 4 days in the fridge.
Sour cream
½ cup120 gMayonnaise
¼ cup55 gGarlic cloves, toasted then mincedToasted in their skins in a dry pan
4 cloves12 gDill pickle brine
1 tbsp15 gDried dill
2 tsp2 gFine sea salt
¼ tsp1 gBlack pepper
¼ tsp1 g