Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to shell pine nuts [title] Gather your unshelled pine nuts. [step] If you have simply purchased shelled pine nuts, then you can skip this step. However, if you're looking to gather your own pine shells, then you should know that it's a lengthy process that can take months.

Ending1: Remember that pine nuts are hard, so buy specialized nut casings that can last longer. [substeps] If you're buying seeds, make sure to use organic allergen-free pellets to get soft pine nuts for best results. Ending2: [title] Chop two, three, five, or seven of the walnuts into tiny pieces. [step] Use a mortar and pestle or similar tool to break up as many pine nuts as possible. Ending3: Here's what you have to do : [substeps] For the gray pine, you should collect the cones in september or october and keep them in an airy, but dry place, such as a garage. The cones should still be tightly closed at this point. Ending4: Be prepared to specify that you will not eat the nuts you purchased, even if they look as if they're ripe. [substeps] When possible, opt for a strip of unshelled pine nuts instead of a cluster of fine pine nuts.

Answer format: ending1/ending2/ending3/ending4