Girls, can you tell me how to teach a child to chew? We have six teeth…

Girls, can you tell me how to teach a child to chew? We have six teeth already, but he doesn't want to chew anything. I've tried everything. He bites and bites, but won't chew. Especially if you give him soup and there are pieces of chicken or turkey. Or potatoes. He doesn't want to chew, he chokes and spits it out. Tantrums start when he eats, he refuses to eat unless you give him puree. Mom constantly tells me that he should chew.