An invitation to a ketchup...

When learning another language, it is sometimes difficult to find the correct word - the one that fits, that makes perfect sense to the listeners. And if you choose the wrong one, it can sound quite amusing :-) Such an instance occurred today...

A student was trying to talk about making a sauce in a recipe. They said, "...and then you invite the ketchup." Of course, what they wanted to say was, "...and then you add/put in ketchup", but it can be so hard to find just the right word in the pressure of the moment.

However, for an Englishman, this sentence conjures up some interesting images...

Or perhaps even a letter/e-mail:
Dear Ketchup, 
You are cordially invited to participate in my meal tomorrow evening. It would be very convenient if you could make an appearance about 7.00pm. Don't be sparing. Spread yourself around a bit, and don't complain if I squeeze too hard.
Yours faithfully