Sweat the leeks and garlic in the oil in a large frying pan until soft. Then allow to cool.
Into a mixing bowl add the potato, mustard, cheese and Herby Hog Seasoning and stir well.
Add the cooled leeks and breadcrumbs and mix with your hands until it all comes together.
Portion the mix into 6 equal portions then form into sausages.
Coat the sausages first in flour, then the wet gram flour mixture and finally the breadcrumbs.
Shallow fry the coated sausage until golden. Serve immediately.
Serve with a relish of your choice for dipping