Other features of the 1970s buffet table: rice salad, served in a ring mould, with peppers and olives in it. I think it was called Greek rice salad. Chicken wings in breadcrumbs, salmon mousse (made with tinned salmon - great recipe), lots of salad (green, tomato), mini jacket potatoes with a mayonnaise and sour cream dip. Oh and a cold smoked sausage - a huge one from the Polish deli in town. Roll mops if it was family. "French" bread, with butter and the cheese board (Cheddar, Danish Blue and Boursin - Brie hadn't arrived by then). Tinned fruit salad with a fresh kiwi fruit added, chopped very small. Oh and she used to serve something which involved tinned pineapple and mandarins, cocktail cherries, marshmallows and sour cream, all mixed up together. I think I was the only person who ever ate it.
Wine was never served - there was beer (Watney's Party Seven), martini or cinzano, gin and tonic, whisky and soda (from a siphon - we had to check it before guests arrived as a dead wasp fell into someone's drink one year when it was squirted) or dry ginger. And little tins of "fruit juice" - pineapple for Auntie June and a few cans of orange for anyone who didn't fancy alcohol (most did).