Everyone always started their conversations with the same two questions for Bertie Bott. Why and how?
The answer to why came easily.
"Because I can."
The how proved a little more complex.
It was an interesting combination of two potions, a charm, and finally, a healthy dose of Muggle ingenuity. He started out working in his basement with the two potions and the charm, mixing up tasty flavors. When a pair of dirty socks accidentally got mixed in, history came to pass.
Invariably, the ensuing question regarded what potions and charm he used.
"Trade secret," he answered with a smirk.
And what Muggle ingenuity was he referring to? Why, the automated assembly line of course! The only way to produce as many beans as he did in as many flavors as he did came about by creating a factory based upon Muggle technology.
That caused certain witches and wizards to be aghast. Yet, being truthful exhibited no noticeable fall in sales. Those pureblood children possessed too much money burning holes in their pockets to pass up spending it at Honeyduke's on their Hogsmeade weekends.
Bertie also knew to never underestimate the dare factor that went into eating his confections.
Bertie looked at his picture on the card with a grin. He stood holding a sack full of his famous jelly beans in one hand, and a single bean up in the air between his thumb and forefinger in the other. A green colored bean. Bertie watched himself pop the candy into his mouth and then smile straight into the camera while chewing it. He endured ongoing speculation as to the exact flavor.
Bertie's coy answer remained, "It's my favorite flavor, of course."
Bertie hadn't done anything which saved people's lives. He hadn't written a book to educate future generations of witches and wizards. He was rubbish at Quidditch.
He couldn't help but enjoy the irony that his famous candy invention caused enough fame for him to be featured upon the trading card within a competitor's candy.