It was grown wild as a weed in cornfields amongst grains. Petronius is this plant also used for cooking with?...as Cornflour as we both know is used in cooking
Yes it's flower and it's used as a thickener in gravy and regarding cooking sponge cakes it helps them rise
Cornflower usually refers to Centaurea cyanus. Cornflour is flour made from corn (Zea mays.) Homophones but not synonyms. Various articles about the nicknames: http://www.albertvieille.com/en/products/21-cornflower-water-6-france.html http://www.softschools.com/facts/plants/cornflower_centaurea_facts/2175/ https://www.americanmeadows.com/wildflower-seeds/cornflower-seeds/all-about-cornflower http://www.flowersofindia.net/catalog/slides/Cornflower.html
Way different plants as purpleinopp stated, differentiated by the spelling of flower and flour. Cornflower is edible but it is not the one that is ground up to use as a bread ingredient or a thickener.
I'm glad you enjoyed them, Toni! Common names of plants can be so fun when one investigates their origins.