You should open a restaurant.
6 seconds sound clip from the Ruggles of Red Gap (1935) movie soundboard.
You can hear this line at 00:54:07 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, Colonel, you seem so at home in the kitchen.
- It would be difficult to describe the intense satisfaction I have always derived from cooking.
- Oh, Colonel, you must write out this recipe for me.
- Nothing would give me greater pleasure, Mrs Judson. Dear me!
- You should open a restaurant.
- He's back again! Down, sir! Down, sir!
- Mr Barker, out! Out! Out! Mr Barker!
- Down, sir! Down, sir! Down, sir!
- We're goin' out to the ranch for a few days to get away from it all. Heh-heh! Ain't that right, Ma?
- I've been taking the liberty of reading again the life of your great American statesman, sir.
[...]