If it's a short trip I usually fast for the 2-3 days, it's much easier.

But another thing you can take with you is just a portable egg cooker. Eggs are more easier to source in other countries then good meat and it's just less hassle IMHO.

For meat you can eat outside (steaks, BBQ etc)

I do still drink coffee, so I also take a french press and buy butter. I then use a thermos to pour the coffee in, put the butter and cream in and shake vigorously, to get in the fats

Works we while traveling!