Here's the completed spidergram based on the provided categories and menu items:
Salads
Chef's salad
Caesar salad
Soup
Noodle soup
Chicken soup
Tomato soup
Vegetables
Cabbage
Mashed potatoes
Meat
Lamb
Roast beef
Roast turkey
Chicken curry
Fish
Trout
Tuna
Salmon
Desserts
Ice-cream
Apple
Choc-ice
Sorbet
Drinks
Fruit juice
White coffee
Black coffee
Tea
Restaurant menu
Main course
Roast chicken
Explanation: The spidergram organizes the menu items into logical categories. 'Main course' is a broad category that can include items like 'Roast chicken'. 'Desserts' and 'Drinks' are also distinct categories. 'Salads', 'Soup', 'Vegetables', 'Meat', and 'Fish' are primary categories of food.