Energy food

Fixedwheelnut Short rides carb/protein mix drink is usually enough, longer rides up to 300km fig rolls, jelly babies, wine gums, malt loaf, energy bars or gels.
I carry my snacks in a little top tube bag for easy access and avoids a sticky mess in your jersey pockets. see link below.

300km plus all that sugary carb stuff can play havoc with your digestion and you should be burning more fat by then anyway, you start needing normal savoury food aswell, sarnies BLTs, or a proper meal in a cafe, I have a penchant for Bacon Bagguettes, a pint of milk or a yogurt drink helps ease any acidity caused by the high energy stuff aswell.
I usually keep one bottle with plain water in to swig on after eating on the move.

Wiggle Tri bag link

After rides when I get home I drink as much water as I can and have a bowl of cereal.

BLIMEY, and for rides over 300km he says....I don't mind saying it, I am in awe of you mate

I like the idea of barley suger and dried fruit