How to Make It
Preheat the oven to 350°. In a large baking dish, toss the beets with 2 tablespoons of the olive oil. Cover with foil and bake for 1 1/2 hours, or until tender. When cool enough to handle, peel the beets and cut them into 1/2-inch wedges.
Meanwhile, line a large rimmed baking sheet with parchment paper and lightly butter the paper. In a medium saucepan, combine the 1 tablespoon of butter with the sugar, corn syrup and a pinch each of salt and cayenne and bring to a boil, stirring, to dissolve the sugar. Add the almonds and stir until evenly coated with the syrup. Scrape the almonds onto the parchment-lined baking sheet in an even layer. Bake with the beets for about 12 minutes, until golden and bubbling. Let the nuts cool for about 25 minutes, then break into small clusters.
In a small saucepan, simmer the tangerine juice over moderate heat until reduced to 2 tablespoons, about 15 minutes. Let cool, then transfer to a large bowl. Whisk in the vinegar, mustard and shallots. Gradually whisk in the remaining 1/2 cup of olive oil and season the dressing with salt. Add the beets and frisée and toss.
Transfer the salad to a platter or bowl. Garnish with the candied almonds, shave the pecorino on top and serve.