I experimented until I got the recipe just right.

我不断地尝试，直至找到正合适的烹饪法为止。

《牛津词典》

I experimented many times and finally I made it.

我尝试了很多次，终于成功了。

youdao

The short answer is that I experimented and guessed! Not an ideal solution.

想当然的答案可能是：试验和猜测，但这不是一个好办法。

youdao

I experimented with every kind of material.

VOA: special.2009.07.18

So over the following seven years, I experimented with designing offsites.

FORBES: The #1 Killer of Meetings (And What You Can Do About It)

The emphasis by 4-H programs on hands-on learning is directly correlated to the creative mischief that I experimented with in open fields as child. 4-H programs are designed to meet youth where they are to participate in self learning.

WHITEHOUSE: Youth Development through Self Learning

Although anyone can have a go at this illusion I was experimented on by some real experts.

BBC: David Gregory-Kumar: The rubber hand experiment