HP Sauce™
noun /ˌeɪtʃ piː ˈsɔːs/
/ˌeɪtʃ piː ˈsɔːs/
[uncountable]- a popular British make of dark brown sauce sold in tall bottles. It is made with vegetables, vinegar and spices and is eaten with various different foods, especially meat, chips, etc. The letters HP stand for Houses of Parliament, and there is a picture of this building on the label.