Saturday June 14th 2008: Pandava Nirjala Ekadasi -Total fast even from water, if you have broken Ekadasi, otherwise fast from beans and grains. More chanting is preferred. More devotional service is preferred.
Sunday June 15th  2008 : Dvadasi -break the fast between 4:15 am and 4:32 am.

For ekadasi recipes, refer the classics: Yamuna Devi's Cook Book
or Adiraja's Cookbook