This Crispy Fish Sandwich is truly the ultimate fish sandwich. It’s filled with flavors, super easy to make and done in about 20 minutes. Serve it next to a handful of potato chips and a couple of ice-cold beers for an incredible meal. For the fish, I used fresh cod fillets. However, you can use other types of firm white fish fillets. Such as halibut, seabass or even hake. If you are using frozen instead of fresh, make sure to fully thaw it out beforehand.