Wash potatoes thoroughly, cover and cook for 15-20 minutes. Quench and let cool.
Wash the lemon hot, grate dry and finely grate the peel. Wash parsley and chop finely. Mix both with oil, pesto and sea salt. Halve the potatoes and distribute on grill trays. Fry on the hot grill turning frequently.
At the end drizzle the pest marinade over it.