Depends on when and how far I'm going to ride.
<20 miles, first thing in the morning, I'm good to go with two cups of black coffee and no food. Beyond 20 miles, I'll need something like half a Clif bar to get home without bonking.
>20 miles, or later in the morning, I'll have my usual breakfast of yogurt with walnuts and dried fruit. If it's later still, I'll eat half a peanut butter and honey sandwich, and/or a banana.
>25 miles, I'll drink 1 bottle/hour of Cytomax.
But I always carry a Clif bar or equivalent, which I rarely eat. But it's there if I need it.
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"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles