When comes to a food combination people used to mix everything together. It is absolute wasting of food and it will make more damage than good. It is unnatural that you have so many different types food at the same time and most of them is even artificially prepared.
The preferred way to eat is mono food eating. That means that you eat one food only at once. Between every food you should have about 2 hour space. This space depends on what you are eating. Raw fruit has the smallest time to digest, usually 30 min to 1 hour. Raw vegetables digest 1 to 1 1/2 hour. After a cooked meal, especially meat, you should take at least 4, 5 hours rest.
If you would like to combine more food, here is some basic rules:
1, starch (potato, cereal based, beans) never combine with 2,3,4,5,6,7
2, protein (meat, milk based, eggs, tofu, nuts) never combine with 1,2,3,4,5,6,7
3, sweet fruit (figs, banana, dates) never combine with 1,2,4,5,6,7,8
4, acid fruit (tomato, orange, lemon, mandarin, grapefruit, passion fruit, blackberry, strawberry, pineapple) never combine with 1,2,3,5,6,7,8
5, subacid fruit (grape, cherry, apple, peach, nectarine, pear, raspberry, apricot, blueberry, mulberry, mango, papaya) never combine with 1,2,3,4,6,7,8
6, melons do not combine with anything
7, fats (oils, seeds) never combine with 1,2,3,4,5,6
8, vegetables never combine with 3,4,5,6,7,8
This table is mine simplified. But as you see, it is better to eat everything alone. Why? Very simple. Every food types need different enzyme to digest it. And every enzyme need different medium in stomach for working. When you combine meat, which use trypsin and pepsin to digest, these enzymes need HCL to work, which is acid environment, and starch, use ptyalin, which need alkaline environment, result of alkaline and acid will be neutral watter that will not digest food and you will get zero nutrition of it.
The images bellow are all bad combination, do not food you child with this things.
Photo credit: MorgueFile