I find it hard to chew on anything if its a tough endurance ride, so the drink my strength depends on is a Tang+sea salt mixture that i carry in one bottle. On the full day rides/longer distance rides in Malaysia, I bring a small box of the mix with me. It's the best tasting to me, and better than the fizzy drinks that are available at the stops.

I doon't know about the electrolytes I guess, But the salty sweet taste good, and the orange flavour is nice and artificial.. hahha, and it really works to keep me fueled.