All four pitchers are woodfired in the kiln (temperature around 1300 C.) Looking at the main photo, from the left side you can see:
Pitcher 1: white shino glaze on inside and outside.
Pitcher 2: shino glaze inside. Outside walls are nonglazed but the shiny, silver texture is an effect of fire and ash activity during the firing
Pitcher 3: feldspar glaze inside and outside. Very nice gray/green apperance.
Pitcher 4: shino glaze inside. Outside: raw clay.