The best veggie burgers

·     2 large sweet potatoes, peeled and cubed

·     1 small red or white onion

·     2 garlic cloves, chopped

·     Handful of shredded cavolo nero or curly kale

·     50 g chopped hazelnuts

·     2 tsp wholegrain mustard

·     100g mixed seeds

Cook the sweet potatoes in boiling water for 15-20 minutes until soft, set aside to cool in a large bowl

Gently sauté the onion and kale until soft then add the garlic and cook for further minute

Combine the onion mixture with the sweet potato and add in the chopped nuts, mustard and some salt and pepper, mix well

Shape into burger patties, pour the mixed seeds onto a large plate and roll the burgers to coat in the seeds

Gently fry for 5-6 minutes on each side in a little olive oil until golden and cooked through

Serve with a side of kimchi