This reminds me of when my toddler would take his shoes off in the car during the five minute drive home from daycare, since I had to put them back on to get to the house. I asked him not to, but he continued to until the time I didn't put them back on, and he had to walk through cold puddles to get to the house and wait on the porch until I got him clean socks. He didn't die, but he did learn. Consequences people.
Following in my parents' footsteps, my children could choose one item they wouldn't eat. Bananas in my case. Otherwise, being picky wasn't even an option. Our parents worked hard, my mom put a home-cooked meal on the table every night, we ate it.