Preorder groceries in Brussels?

Delhaize have such a service, as do Carrefour, info on their sites or are you looking for a non-routine solution? Is it for normal goods or specialist ones? If the latter, anything in particular?

If it's for organic food, you could have a look at my new website: www.metabolance.com. It works with pre-ordering and pick-up once a week. Website is in English. With regards to spices, there are only a few ones online for now, but you can always send me a message with what you'd need and I can probably get it for you. Hope that helps..