Toast the cumin seeds gently in a small dry frying pan for 2 minutes, stirring occasionally, then remove from the heat.
Put the beetroot, chickpeas, garlic, coriander, salt and olive oil in a food processor. Add the cumin seeds and lemon juice and season well with freshly ground black pepper. Blitz until smooth. Check the seasoning to taste, adding a little more salt, pepper or lemon juice if needed, and blitz again.
Use the hummus as a spread for sandwiches and wraps or as a dip. Keep covered in the fridge for up to 3 days, or freeze.
