Gotta recommend the stove also as Eagles6 says. But I have a solid fuel tab so less liquid to slosh around. And I say have a metal canteen to help melt snow and ice for water as that is one of your big concerns.
I have a US military surplus canteen (plastic) which nests in a steel canteen cup which in turn nests in an aluminum solid fuel stove that uses trioxane solid fuel tabs though any work.