i to have used boil in the bag food and used the water after for a brew with the after taste making strong coffee helps but wont better your thirst
i have found that if you put your stew in the lid of your meths cooker (trianga army type) and boil the water under in the main billy can it works like a bainmarie heating up youe food and heating the water (after taste free) for your brew
i have found that if you put your stew in the lid of your meths cooker (trianga army type) and boil the water under in the main billy can it works like a bainmarie heating up youe food and heating the water (after taste free) for your brew