Check About This Mac to find the version number and build number of your Mac operating system. Knowing the macOS version number can help you determine whether your Mac is up to date or meets the system requirements of other software or devices. Learn how to update the software on your Mac.
What is a pickle? A pickle, at its most broad and basic, is just a vegetable that has been made sour. Pickling refers to the act of souring (or acidifying) something (usually vegetables, but sometimes fruits, eggs and even meats).
Sourdough is a stable culture of lactic acid bacteria and yeast in a mixture of flour and water. Broadly speaking, the yeast produces gas (carbon dioxide) which leavens the dough, and the lactic acid bacteria produces lactic acid, which contributes flavor in the form of sourness.