Potato-Leek Soup
, 1 h, 4 servings
A creamy potato-leek soup topped with crispy fried herbs, capers, and a bright gremolata of lemon, garlic, and parsley.
| prepLine a baking sheet with paper towels | |||||
| prepClip a deep-fry thermometer to a small saucepan | |||||
| 1 large lemon, zest finely grated (cut into wedges for serving) | Grate lemon zest, cut wedges, chop garlic | Ladle soup, top with gremolata, stir & serve with lemon wedges | |||
| 2 garlic cloves, finely chopped | |||||
| 30 g fresh sage leaves (loosely packed) | Fry sage 225°–250°F / 107°–121°C, 2 min | Strain herbs & capers, cool oil | Chop thyme, combine with parsley, sage, rosemary, capers & salt | ||
| 15 g fresh rosemary leaves (loosely packed) | Fry rosemary 225°–250°F / 107°–121°C, 2 min | ||||
| 10 sprigs fresh thyme | Fry thyme 225°–250°F / 107°–121°C, 2 min | ||||
| 1 100 g jar capers, drained & patted dry (⅓ cup plus 1 Tbsp. packed) | Fry capers until crisp & darkened, 5 min | ||||
| 40 g fresh parsley leaves (loosely packed), coarsely chopped | |||||
| 1 Tbsp. plus 1¼ tsp. Diamond Crystal or 2½ tsp. Morton kosher salt (for gremolata) | |||||
| 2½ lb. / 1.1 kg small or medium leeks (6–8), white & pale green parts cut into ¼" rounds, rinsed | Prepare leeks, celery & garlic, season | Cook leek mixture covered, 5 min | Add potatoes, stock & salt, simmer 15–20 min until tender | Return leeks, add stock & cream, simmer until starting to bubble | |
| 3 celery stalks, sliced ¼" thick on slight diagonal | |||||
| 5 garlic cloves, thinly sliced | |||||
| 1¼ tsp. Diamond Crystal or ¾ tsp. Morton kosher salt (for leeks) | |||||
| 1¼ lb. / 570 g small fingerling or Yukon Gold potatoes, cut into ¼" disks | Slice potatoes | ||||
| 1 quart / 950 ml vegetable stock (first addition) | |||||
| 1 Tbsp. Diamond Crystal or 1¾ tsp. Morton kosher salt (for potatoes) | |||||
| 1 quart / 950 ml vegetable stock (second addition) | |||||
| 120 ml heavy cream | |||||
| Extra-virgin olive oil (for frying herbs & capers) | |||||
| Extra-virgin olive oil (for cooking vegetables) | |||||
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