La Cazuela up in Rogers park on Clark near Lunt (next to Dona Lalis if that helps) does an excellent ceviche tostada and serves cold beer to boot.
GWiv and I had lunch there a few months back. Search the other board,I believe there are some pictures.
What other board?
I would also recommend Las Islas Marias and El Barco's ceviche.
Top, La Cazuela fish ceviche, bottom, La Cazuela octopus ceviche.
6922 N Clark
773 338 5425
Las Islas Marias
4770 W. Grand Avenue
1035 N Ashland Ave
Chicago, IL 60622