380g tin tomatillos, available online
1Β½ green serrano or jalapeΓ±o chillies, stems removed, halved
1 tbsp roughly chopped fresh coriander
2 garlic cloves, finely chopped
ΒΌ onion, roughly chopped
1 shallot, thinly sliced
125ml/4Β½fl oz chicken stock or water
Β½ tsp flaked sea salt
300ml/10fl oz corn or sunflower oil, plus 2 tablespoons
75²µ/2Β½΄Η³ϊ Lancashire cheese or feta, crumbled
4 free-range eggs
4 tbsp soured cream