Boiken Apples This page first published: May 5, 2005 · Modified: Jun 18, 2018 · by CooksInfo. Copyright © 2020 · This post may contain affiliate links · This blog generates income via ads · Boiken are round, medium-sized apples with smooth, yellowish-green skin with red flushes. They have firm, fine-textured white flesh and are mildly tart. Cooking Tips Boiken Apples are good for fresh-eating, juicing and cooking. History Notes Boiken Apples were developed in the Prussia area of Germany before 1828.