The Tomato - or Second Reason
A good hamburger requires a nice juicy tomato, but it's still not the most important ingredient.
The same is true of a paragraph or an essay: The tomato is the second most important reason, cause, solution, observation, or argument. It has to be juicy. Wilted lettuce and a limp tomato can ruin a burger, even if they aren't the most important ingredients.
Remember, the tomato has to be the same part of speech (noun, adjective, verb, adverb) as the lettuce.
The most important part of the burger, as with the paragraph or essay, is the last one, the meat.
