In Lent in the states where I spend the most time, the churches often have very good fish fries on every Friday except Good Friday. It’s a benefit for the churches, they make lots of money which the churches can definitely use, people (usually elderly Knights of Columbus ) work really hard to put these on and it’s a good fellowship opportunity as many parishioners attend. The thing is, if you go and spend the money on the dinner to help the church, then it’s not much of a sacrifice because the food is so good. You can probably find some other church, usually one in a rich area that doesn’t need fundraising money, doing a bread and veg soup fast night, but if you go there then the church that needs the money and is doing the fish fry doesn’t get paid. This is why I think of the fish as more of a common witness rather than a penance. I go to a different awesome fish fry each week and spend my money to help the church putting it on.