The only problem with the Moutain House Meals is basically the cost and that they cannot be eaten without being re hydrated.
A typical Mountain House meal ony has around 500-700 Kcal per 2 serving sachet. In the UK one of these sachets cost around $7.50 or more.
For about $10 I can get this at the local supermarket.
Weight is 1.6 Kg or 3.5lbs but contains the following
Heinz Spotted Dick Pudding - 285 grams net = 960 Kcal - $1.50
Princes Lean Corned Beef - 340 grams net = 660 Kcal - $3.00
Halva - 400 grams net = 2160 Kcal - $3.00
Smash Instant Potato - 176 grams net - 570 Kcal - $1.50
Birds Instant Custard - 75 grams net - 318 Kcal - $1.00
Sage and Onion Stuffing - 85 grams net - 435 Kcal - $1.00
Total Kcal - 5,100 Kcal - $10.50