Spinach Salad with bitters

12 small beets 1/4 cup extra-virgin olive oil, plus more for drizzling 1/2 small red onion, very thinly sliced 1/4 cup red wine vinegar Salt 3 tangerines 1[...]

2 lemons sliced paper thin rind and all 2 tbsp sugar 1/4 tsp salt olive oil spinach (not baby spinach, mature spinach) bowl full honey dizzle salt and pepper[...]