Humble sardines are about grow in popularity:
1) they taste good-- similar to tuna
2) they're a healthy seafood choice-- rich in omega 3's and calcium, low in contaminants like methylmercury
3) they're eco-friendly-- not overfished
4) they're really affordable.
This is a simple dish that goes well with pasta, rice, or polenta. The fennel is subtle and gives it a little elegance.