It's all in the presentation.

From "Blackadder goes forth"
(based in the trenches of World Wat I)

Baldrick: Right, how about a nice meal, while you chew it over?

Blackadder: [suspicious] What's on the menu?

Baldrick: Rat. [shows him a big black rat] Saute or fricassee.

Blackadder: [peers at the rat] Oh, the agony of choice. Saute involves...?

Baldrick: Well, you take the freshly shaved rat, and you marinade it in a puddle for a while.

Blackadder: Hmm, for how long?

Baldrick: Until it's drowned. Then you stretch it out under a hot light bulb, then you get within dashing distance of the latrine, and then you scoff it right down.

Blackadder: So that's sauteing, and fricasseeing?

Baldrick: Exactly the same, just a slightly bigger rat.