Celery seed in tomato soup? That sounds good. I made homemade tomato soup once. A little grated onion and a little allspice with the tomatoes and milk or evaporated milk, I don’t remember which. It turned out really well, but my husband didn’t care for the consistency, because it was thicker than Campbell’s. Now that I have an immersion blender, he probably would like it. Never tried dill pickles in my potato salad. Sounds good.
But homemade tomato soup is a whole 'nuther animal. Most people might not like it. We'd (mom, dad, me whoever was making it) would sizzle a little onion in butter just until a little brown on some of the edges. Onion was optional; sometimes not.
Then add home-canned tomatoes or a lg can chopped with about 1/2 or more baking soda until they foamed (had to kill the acid). Then heat the milk in a different pan. Add the hot but not boiling tomatoes to the milk. Float a generous pat of butter on the top.
In 7th grade cooking class we made it with a white sauce. It didn't taste good at all to me. Yuck. Maybe someone else could jazz it up to where it would taste better.
Haven't had any of the family homemade version for years. I think it was a farm tradition to cook it that way.