Matzo Balls; Eating Dirt; Mexican Food in the USA

This week on Good Food, we're getting ready for Passover.  Host Evan Kleiman and Chef Ilan Hall of The Gorbals compare notes on matzo balls.  Celebrated chef Joan Nathan investigates Kosher food in France.  We'll also look into Pica, the uncontrollable urge to eat dirt, starch and ice, with Dr. Sera Young.  Jonathan Gold takes us out for Singaporean food.  Plus, Gustavo Arellano takes us to Mitla Cafe, the oldest Mexican restaurant in the Inland Empire.  Their food is emblematic of  Cal-Mex cuisine.  And, Chef Michael Cimarusti has some ideas for what to do with asparagus.