The standard Belgian breakfast is tartines — bread with butter and jam, or butter and speculoos spread, or cheese. Maybe a boiled egg if someone is being ambitious. It’s perfectly nice and also entirely off-limits on keto, which means you need a different approach from day one.
The good news is that the alternatives are straightforward and the ingredients are easy to find. The bad news is that you will eat a lot of eggs.
What actually works
Eggs are the obvious answer and remain the answer no matter how many times you’ve had them. Scrambled, fried, omelette, soft-boiled — the format is less important than having them available. Most Belgian supermarkets sell decent eggs at reasonable prices, and if you buy from a market stall or a farm shop in the countryside you’ll find better ones. An omelette with cheese and some leftover vegetables from dinner takes five minutes and keeps you full until lunch.
Charcuterie is everywhere in Belgium and most of it is keto-friendly. Jambon d’Ardenne, various pâtés, smoked sausages — check the label on anything that looks processed, but the basic cured and smoked meats are fine. A couple of slices of decent ham with some cheese is a legitimate breakfast.
Full-fat Greek yoghurt with a handful of nuts is another option, though yoghurt does have carbs — check the label and aim for plain, unsweetened, full-fat. Not every brand is equal.
The office breakfast situation
Belgian offices have a specific culture around communal breakfast: croissants at Monday morning meetings, viennoiseries when someone has a birthday, pain au chocolat when a project is done. This happens constantly. The social dimension of refusing it is covered elsewhere on this site, but practically speaking: you are going to encounter croissants at work, they will smell like croissants, and you will need a plan.
Eating a proper breakfast before you leave home helps more than you’d think. Arriving at a meeting already full means the croissant is much easier to decline. Arriving hungry is harder.
Belgian hotel breakfast
The Belgian hotel breakfast buffet has good keto options buried in it. The egg station — most hotels have one — is your starting point. The cheese selection is usually reasonable. Cold cuts are there. The problem is that 80% of the table space is given over to bread, pastries, and fruit juice, which makes it feel like there’s nothing for you. Walk past all of that, head to the eggs and the cheese and the ham, ignore the miniature pains aux raisins, and you’ll eat fine.
The yoghurt at hotel buffets is often the sweetened low-fat variety, which is not useful. The orange juice is not useful. The basket of mini croissants is genuinely difficult because they are excellent. This is just how hotel breakfast is.
One hotel breakfast thing that does work: smoked salmon, when they have it, with some eggs and cream cheese. Not every hotel does this but the ones that do make the whole situation easier.