For rides of 90 minutes or more I have a liquid breakfast that takes barely a minute to make and drink.
Two large scoops of complex carbohydrates and one large scoop of protein give me the ideal blend for pennies.
On a related note;
after giving up breakfast until AFTER my early morning, hour-long ride, I lost about 10kg of fat in ten weeks or so.(I also gave up alcohol completely at the same time).
I was told by an old roadie, as per geetee1972, that this would metabolise fat as fuel and also help to efficiently burn calories throughout the rest of the day.
This was pre internet days so never actually checked up on it but it certainly worked for me.
The wise old man also told me to have a strong cup of coffee before the ride as caffeine helped with the fat burning process.
Again, no proof but it can’t harm.
For the first few rides I felt as though I was going to run out of energy but simply slowed the pace for the first ten minutes or so then off I went.
Got used to it and now it feels normal.