In this part of the world UHT milk is favoured by the cruising community.
It is stored unrefrigerated indefinitely , It is not affected by high ambient temperatures - it comes in
small 250 ml (1 1/2 cups) containers
We have 3 models :-
#1 Plain Milk containing 3% percent butter fat
#2 Low Fat with 0.5% butterfat
and
3# Non Fat - 0% fat - no cholesterol
Retail cost around 20 cents US a packet.
From a taste point of view - very little difference with Fresh milk.
Easy to store - good size - when empty can be flattened and disposed of by burning at sea.