ok so you need to drink at least 3l of water per day.
for breakfast you can eat whatever you want. bowl of fruits, poridge. an omlette. w/e
lunch is 180g of protein(meat, cheese,fish). 400g of carbs (vegetables.) and an apple or a fruit equal to the weight of an apple as a desert.
dinner is 160g of protein and 350g of carbs. same desert as lunch.
no bread, noodles, pig, cow milk (goat, sheep and soy is ok)
nothing more during the day except those 3 meals. no snacks nothing.
keep that up for 2 months without doing any additional work and you'll lose those 10kg.
obviously if you would hit the gym or exercise you would lose more and get fitter.