This working hotdog vendors mod allows you to buy hotdogs like in GTA IV for $5 a piece. They will heal you up a bit. Also, this feature was supposed to be implemented by Rockstar which is obvious with the leftover lines if you try the mod when you eat the hotdog and the “random unknown reason” they spawn with NPCs maintaining them.
Put WorkingHotdogVendors.dll in the scripts folder
Press E or Right D-Pad near the next hotdog vendor