Horseradish is a staple of many Passover seder tables. In this dish from cookbook author Leah Koenig, it gets mixed with mayonnaise and fresh rosemary in a piquant dip for roasted parsnips.
- 1⁄2 cup mayonnaise
- 1⁄3 cup prepared white horseradish
- 1⁄2 tsp. garlic powder
- 1 1⁄2 tsp. finely chopped fresh rosemary
- Kosher salt and freshly ground black pepper, to taste
- 2 lb. parsnips (4–5 medium), peeled and quartered
- 2 tbsp. olive oil