Lemon Wedge in a drink….
Someone mentioned that they dated a Bochur who was “brilliant” in halacha and he reordered the drink without a lemon. With all due respect to his brilliance one is allowed to have a drink with a lemon wedge in a non-kosher bar without any issue whatsoever. A lemon is considered a “Dovor Charif” (sharp item) and when a non-kosher knife is used to cut the lemons the first lemon attains the status of non-kosher from the knife thereby rendering all other lemons cut as having being “kosher” with regards to the first lemon they are generally placed in a bucket to be used during the entire day and the first lemon would most prob be “botul beshisshim” taking it a little further most reputable bars for health reason are required to use specific utensils for specific tasks i.e the knife used for cutting the lemon is the same every day, and generally speaking those utensils dont leave the bar area ever. So the brilliant halachic bochur you dated was not so brillaint rather just being foolishly stringent over nothing and didnt learn even the most basic concepts in yoreh deah.