If you look at the stem of an artichoke you will see a ring, with tough green bark (for want of a better term) surrounding a paler green heart.The bark is not good to eat, and you should remove it with a paring knife, leaving the heart of the stem, which is good to eat.ere we were going to need sliced artichokes, and trimmed the stem of the artichoke leaving about an inch (2.5 cm) below the petals.
Si is the short form for Silicon and silicon is not a metal. Si is the short form for Silicon and silicon is not a metal.
Vintage Computer Chip Collectibles, Memorabilia & Jewelry. Silicon Wafers. in the Semiconductor Industry. Silicon (Si), a Semiconducting material made from silica, is the fundamental building block of modern integrated circuits, diodes, rectifiers, transistors, and solar cells. The history of Silicon starts with it's discovery by JÃ¶ns Jacob Berzelius, a Swedish chemist, in 1824.