In 2016, we visited Barcelona and the first thing we did was take a tapas tour with Barcelona Taste as recommended by Rick Steves. It was a great experience and we learned a lot about eating tapas and drinking vermouth as an aperitif. We a had a great guide and met some very nice people. The cost was 80 euros each.
This year, we returned to Barcelona and thought we'd try a more extensive experience with the other company Rick recommended, Food Lovers Company. They advertise a tapas tour and a more extensive food tour. We signed up for the food tour and had an enjoyable evening with Oliver and , while it included the advertised four locations and tasty food, it was still, only a tapas tour. And, it cost 140 euros each.
Do take a tapas tour if visiting Barcelona for the first time. I recommend the tour by Barcelona Taste and possibly the tapas tour with Food Lovers Company but the food tour is not worth the extra cost.
Our guide, Oliver, did recommend a restaurant where we ate the next night: Restaurant Coure, Passatge de Marimon 20, 08021 Barcelona +34932007532. Service and food were excellent. In the El Born neighborhood, we also recommend staying at the Hotel Banys Orientals; the Story Restaurant for food and jazz and Santaugustina for tapas.