Nibblous | hard-boiled eggs in spicy cream sauce

Ingredients

• 3 tablespoons vegetable oil
• 2ozs (50gms) onion, peeled and finely chopped
• 1" (2.5cm) cube of fresh ginger, peeled and finely grated
• ½ -1 fresh, hot green chilli, seeded and finely chopped
• ½ pint (275ml) single cream
• 1 tablespoon lemon juice
• 1 teaspoon ground, roasted cumin seeds (see footnote)
• one eighth teaspoon cayenne pepper
• ½ teaspoon salt
• ¼ teaspoon garam masala (see footnote)
• 2 teaspoons tomato purée
• ¼ pint (150ml) chicken stock
• 6-8 hard-boiled eggs, peeled and cut crosswise into halves
• 1 tablespoon finely chopped fresh coriander (or parsley - but doesn't taste so good)