Lentil Patties with Lettuce and Yogurt - SippitySup

Ingredients

• ½ cup plus 2 tablespoons, dried French green lentils
• coarse salt (as needed)
• 1 small red onion (half finely diced half thinly sliced)
• 2 large eggs (lightly beaten)
• 1 cup fresh breadcrumbs
• 2 tablespoons chopped fresh flat-leaf parsley leaves (plus more for serving)
• 2 tablespoons extra-virgin olive oil (plus more for serving)
• 1 small head lettuce (such as oak leaf, Bibb, or escarole, leaves separated)
• ½ cup plain yogurt
• cayenne pepper (as needed for serving)
• 12 caper berries (or substitute about 2 tablespoons capers, rinsed)