Does the Alpine stitch use a lot of yarn?
The Alpine Stitch will likely use more yarn than a taller simple stitch like double crochet. However, considering the alpine stitch is a beautiful textured stitch, I think it is well worth a little more yarn.
How do you reduce Alpine stitch?
Decrease: Decreases are two stitches worked together. To work the decrease within the Alpine Stitch, work the fpdc and next dc together, staying consistent with the Alpine Stitch.