Every Portuguese city has one: the unassuming snack-bar that locals defend with the ferocity usually reserved for football clubs. In Guarda, that place is Snack-Bar O Jardim, sitting at Avenida de São Miguel 233 in the lower, residential part of town, far from anywhere a tour bus would think to stop. The house speciality is the bifana, the pork sandwich that is Portugal's true national fast food, and plenty of people in Guarda will tell you this is the best one in the city. The bitoque, a thin steak topped with a fried egg and flanked by chips, is the other reason to come.

The scoreboard backs up the local loyalty: 4.7 stars across 58 reviews, which for a cheap snack-bar is a remarkable strike rate. And cheap it is. This is firmly € territory, the kind of place where you eat well, eat fast, and walk out wondering why you ever pay more elsewhere.

Where it is and how to get there

First, some context. Guarda is the highest city in Portugal, sitting above 1,000 metres, and its historic core clusters around the granite cathedral at the top of the hill. Avenida de São Miguel is in the newer, flatter part of the city below, where actual residents do their actual living. This matters, because the eating in Portuguese cities almost always improves the further you get from the postcard views.

If you are exploring the old town, the walk down takes fifteen to twenty minutes, and crucially it is downhill, which in Guarda counts as a gift. By car it is easier still: unlike the medieval centre, where parking is a blood sport, this part of town has space to spare.

Here is how I would structure the day. Spend the morning up top: climb the Torre de Menagem for the views, then wander the old Jewish quarter with our guide to Guarda's Judiaria, easily one of the most rewarding walks in the city. Then descend to Avenida de São Miguel with an appetite you have honestly earned.

What to order

The bifana, no debate. If you have never had one, this is the format: a bread roll stuffed with thin slices of pork that have been simmering in a garlicky, peppery sauce, ideally for hours. The gap between a forgettable bifana and a great one comes down entirely to the seasoning of that sauce and the patience of whoever tends the pot. O Jardim's reputation was built on getting this right, and the queue of regulars suggests they still do.

Hungrier than a sandwich allows? Order the bitoque. It is the workhorse of Portuguese cheap eating: steak, fried egg, chips, sauce, all on one generous plate. The correct technique, and I will not be argued with on this, is to break the yolk immediately and use the chips as delivery vehicles. Nobody at O Jardim will judge you. They will approve.

A word on expectations: this is a snack-bar in the full Portuguese sense. Service is brisk and unceremonious, the menu is short, and nobody is going to describe anything as artisanal. If you want linen tablecloths, you are in the wrong establishment. If you want to eat the way the people of Guarda eat on a normal Tuesday, you have found the right one.

The terrace

O Jardim has an esplanada, an outdoor terrace, and in Guarda that deserves special mention. At this altitude the climate is serious: proper winters, and a wind with a reputation of its own. But when the weather cooperates, roughly late spring through early autumn, eating a bifana outside in that dry mountain air is one of the better cheap pleasures available in the region. In January, eat indoors and do not feel bad about it.

Practical tips

Reservations: not a thing here, and asking for one would mark you as a tourist faster than a bumbag. Walk in, sit down, order. Weekday lunchtimes can get busy, which is exactly the endorsement you want.
Opening hours: not confirmed, so call ahead on +351 271 213 150 before making a special trip, particularly on Sundays and public holidays when many snack-bars in Guarda close.
Payment: carry cash. Portuguese Multibanco cards are usually fine at places like this, but do not stake your lunch on an international credit card working.
Dress code: whatever you are wearing right now is correct.
Kids: entirely welcome. Relaxed room, food every child on earth will eat, zero side-eye.

Why this place earns its spot

Guarda does not chase visitors, which is precisely its appeal. The city rewards the curious: the cathedral, the medieval streets, the Museu da Guarda for anyone who wants the full historical picture. And because mass tourism never arrived, places like O Jardim never had to perform for it. The sandwich you eat here is identical to the one the man at the next table has been ordering for two decades. That kind of consistency cannot be faked, and it certainly cannot be franchised.

Time your visit well and you can still catch the end of the day up high. Read our guide to Guarda's best viewpoints and when the light is right, because in Portugal's highest city the late afternoon light over the Serra da Estrela is genuinely worth planning around. A belly full of bitoque, a sunset over the mountains, and change from a small note: that is a good day by any measure.

O Jardim will not change your life. What it will do is feed you better than plenty of restaurants charging three times as much, with none of the theatre. In our book, that is exactly the kind of place worth crossing a city for.