The Melachot of Shabbat

Last Friday, I developed minor nasal issues, resembling my allergies. I figured that if I take my allergy medicine and wake up symptom-free, I can assume it was allergies. Was I permitted to take it (nasal spray) on Shabbat?

May I mix red and white wines on Shabbos? May I decorate a cake on Shabbos?

Can we play darts on Shabbat? The darts are classic ones that pierce the board’s surface; the board hangs loosely from a nail in the wall; in between uses, the darts often stay on the boar

The story of the mekosheish, the man caught gathering wood on Shabbos, in Parshas Shelach, contains a host of conflicting and unusual midrashim. The story also serves as a springboard for many halachic and hashkafic issues.

May I place cold frankfurters on top of a hot pot to warm them on Shabbos? May one derive benefit from a cheese dog, which is a grilled hot dog with added cheese and chili sauce? I will be traveling overseas for Yom Tov and Shabbos, and it will be difficult for me to have cooked food ready for an eruv tavshillin. May I use lox as my eruv tavshillin?

If I cook with less salt, may people add salt to their soup or cholent on Shabbat?

May I pull teeth on Shabbos? Does clipping fingernails on Shabbos involve a Torah prohibition? On Yom Tov, may I dig up earth to perform the mitzvah of kisuy hadam?

We set our Shabbat table with a larger "charger" plate under the main plate. At the end of the meal, we clear off the dirty dishes and leave the charger plates. Is there a problem with borer (selecting)?

Is there a way whereby a person suffering from angina or other heart disease may carry his medication on Shabbos through a public thoroughfare?

May I take a kugel that was on a hot plate on Shabbat and put it into a cholent that is in a crock pot?