A hob is a cook top support for the burner
you can cook varieties of food.
you can cook things in a oven, microvewave oven, on a hob and its a very hot day you can boil an egg on a paving slab
A cooker hob is simpley the top of the cooker where pans are heated to cook food. Hobs can be gas, electric or induction. Makes of these are normally the main manufacturers.
hamburger, hob nobs (biscuits).
An electric hob is effectively a stove top with elements on it. When used for cooking one can put a pot or pan on top and fill with water or just use a little oil to cook various foods.
If you are cooking a variety of different foods at the same time, it is safest to cook all foods to the highest internal temperature suggested out of all the foods. However, sometimes this can cause some foods to be overcooked. It would be better to cook the foods separately if their suggested temperatures for safe cooking varies.
You can always ask your doctor what type of foods would be good for your blood type. There are also T.V cook shows that you can watch that will help you determine which foods will be best for your blood type.
You should cook foods you enjoy eating and that you know how to cook.
A chef because I because I know how to cook many foods and I enjoy it.
in a oven
You can use a microwave, electric hob, oven or even barbecue; all methods without using gas.