In return, you pay the restaurateur a cork fee of at most €15. A bargain for both parties. Certain establishments set the bar much lower, or even authorise this alternative free of charge.
The list of BYO restaurateurs, which will probably lengthen in the months to come, can be found on the http://www.droitdebouchon.be/ website.
A website that, for each restaurant, provides a detailed description and a broad range of advice for matching the wine to the dishes served at that restaurant.