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.
Metallurgical-grade silicon is used in the aluminum industry; chemical grade is used to produce silicones; and the highest purity is used to produce silicon chips. Other uses for silica include ferro silicon for the steel industry, silicon carbide (as an abrasive and refractory), cultured quartz for oscillators, sodium silicate &QUOT;water glass&QUOT; for the pulp industry and as a refractory, and fused silica as a filler in electronic components and for many other uses.