You'll need to be totally self-sufficient if you're climbing Mt Kenya, as none of the lodges or camps on the route offer meals. However, most packages include cooks who both carry and prepare all meals for you on the way. Even if that is the case, take citrus fruits and/or citrus drinks as well as chocolate, sweets or dried fruit to keep your blood-sugar level up.
Cooking at Altitude
Increased altitude creates unique cooking conditions. The major consideration is that the boiling point of water is considerably reduced. At 4500m, for example, water boils at 85°C; this is too low to sufficiently cook rice or lentils (pasta is better) and you won’t be able to brew a good cup of tea (instant coffee is the answer). Cooking times and fuel usage are considerably increased as a result, so plan accordingly.
To avoid severe headaches caused by dehydration or altitude sickness, drink at least 3L of fluid per day and bring rehydration sachets. Water-purification tablets, available at most chemists, aren’t a bad idea either (purifying water by boiling at this altitude would take close to 30 minutes).