James Bond knows a thing or two about conchs. For one thing, they're reputed to be an aphrodisiac. For another, island people have conch chowder on their wedding night.
James Bond's diet at Shrublands health farm, as described in Thunderball, includes a mug of vegetable soup. The soup may be something like the potassium broth that Bond learns about while reading Nature Cure Explained by Alan Moyle.
In Thunderball, James Bond orders broiled chicken, disjointed and basted with creamery butter. Bond is disappointed with his lunch, but you can't go far wrong with this recipe.