Serve the fizz with a selection of bought savoury biscuits or crackers (black and red ones add drama) or cocktail blinis. Ideas for toppings include: Hummus and strips of roast red peppers. Guacamole, cooked and peeled prawns and coriander. Egg mayonnaise and slivers of salted anchovy. Stilton mashed with sherry or port and finely chopped nuts. Chicken liver pâté and finely sliced cocktail gherkins. Tzatziki and crabmeat dusted with cayenne pepper. Puréed sun-dried tomatoes and burrata.