Preheat the oven to 200℃. In a bowl toss together the CauliShoots with the chipotle paste, olive oil, zest and juice of 2 of the limes, smoked paprika and salt and pepper to taste. Spread out on a baking tray – or two – and roast for 25-30 minutes.
When the CauliShoots are nearly ready, heat through the tortillas in a dry frying pan. Spread each taco with a tablespoon of refried beans and top with the CauliShoots.
Garnish with a few avocado slices, coriander leaves, radishes and slices of chilli. Serve with wedges of the remaining lime.