There's a chocolate bar i found that contains espresso, and its the only non-liquid food I've found that is genuinely strongly caffeinated. I think it was labeled something like "Nuts and Jolts"?
Edit: brand name is Chocolats Latour, flavor is Nuts & Joltz, description is "caramel walnut latte bar, 40% cocoa".
Post-timeskip is a massive improvement, up until a specific arc (dressrosa) which has, IMO, the worst pacing of the entire series. After dressrosa its hard to stop
Also the voice of the female wizard in diablo 3