Step 1: Take wife to Italy.
Step 2: Eat as many different dishes as possible.
Step 3: Rave about all of them. Declare Italian food the best in the world.
Step 4: Buy Italian cookbook for wife in her native language.
Step 5: Offer to do the shopping.
Step 6: Buy necessary ingredients for Italian dishes.
Step 7: Sit back and let it all come together.
*For plan 7B substitute "Spanish" for "Italian".