Prep Time 10 minutes mins
Resting Time 30 minutes mins
Total Time 40 minutes mins
For best flavor, let the dip rest longer—up to a few hours or overnight—so the dried onion fully softens and the aromatics infuse the sour cream; use full-fat sour cream and mayonnaise for the creamiest texture, and if the dip seems too thick you can loosen it with a tablespoon or two of milk or buttermilk, while if it’s too thin, simply chill it longer as it will firm up; always taste and adjust salt and acid right before serving, and keep the dip refrigerated, discarding any leftovers left out at room temperature for more than 2 hours.