My essentials are:
Baking stuff - plain flour, baking powder, bicarb, cream of tartar, caster sugar, dried yeast, icing sugar, dried fruit, glacé cherries, eggs, cooking chocolate - plain and poss white and milk, just depends
Cereal - weetabix and porridge, poss some sort of crappy cereal for dd
Condiments - Dried mustard, dijon mustatd, tomato ketchup, tomato purée, brown sauce, worcester sauce, soy sauce
Marmite, jam, honey, golden syrup, treacle
Salt, black pepper, white pepper, malt vinegar, balsamic, crystal and red wine vinegar, rapeseed oil, sunflower oil, extra virgin olive oil, sesame oil
Dried herbs - parsley, tarragon, oregano, dill, mint
Dried spices - chili powder, coriander seeds, cumin seeds, turmeric, star anise, panch puran, Chinese 5 spice powder, cloves, cinnamon stick, black and green cardamoms, paprika, smoked paprika, pommegranate seeds, nutmeg, nigella seeds, fenugreek seeds, powdered cinnamon, sesame seeds, mixed spice, allspice, juniper berries, bay leaves, powdered garlic, mace, ground ginger, ground and whole nutmeg, freshly-ground garam masala
Stock cubes - beef, chicken and veg
Dried pasta, rice (normally just cheap white long grain or basmati), noodles
Tinned - tomatoes, sweetcorn, fruit, tuna
Lentils - orange and green, yellow split peas
Few jars of pasta sauce/chilli sauce/curry sauce for convenience.
Garlic, onions, fresh ginger root
Home-made mango chutney, bottled peaches, pickled walnuts