I know this is a really old thread and I'm sorry to bring it up again. I'm in the uk, and I'm very surprised at the uk posters saying how popular peanut butter is. It is sold in my local supermarkets, but I can honestly say that I've never known anyone to buy it. Childrens parties, afternoon tea, picnics, etc, I have never been offered peanut butter sandwiches. Or peanut butter in general. I've never known anyone to tell me that they like it, or buy it. Sandwiches in the Midlands are ham/other cold meats, cheese, cheese spread or jam. Jam to me is fruit boiled with sugar. Either with or without bits and seeds. Jelly is what Americans call jello. A set wobbly desert. Marmalade is basically jam, but made with oranges,lemons, or limes. And preserve can be sweet or savory, but it's jam with a posher name. You can have tomato and onion preserve. Chutney is another one, that is jam but always savory. I love reading about different foods and customs.