First, tell the slugs that they are long overdue for a holiday. When they start cheering and feeling all happy, provide them with some going away drinks. The drinks of course have a little something extra in them.
Once the slugs have passed out, toss them in the pot, add salt, pepper and water, bring to the boil and then blend with cream. Serve to the guests who believe it to be mushroom soup.
In Maputo I am known for my love of tinned tuna.