Golden Beet Salad with Avocado and Haricot Verts

Ingredients

• 1 pound golden beets (about 2 to 3 inches in diameter)
• 1 small red onion (thinly sliced)
• ¼ cup sherry vinegar (or more as needed)
• ¼ cup extra-virgin olive oil (plus a little extra to finish)
• 1 teaspoon granulated sugar
• 1 teaspoon vinegar-based hot sauce (such as Tabasco or Cholula)
• ½ teaspoon fine sea salt
• freshly cracked black pepper (as needed)
• 8 ounces blanched haricot verts (or regular green beans)
• 2 ripe but firm avocados (peeled and sliced)
• 1 bunch fresh watercress (stems and leaves)
• 1 bunch fresh cilantro (stems and leaves)
• 1 bunch fresh mint (leaves only)