Well I'll be honest, the title of your question is one of the funniest I have seen today. Could very well be a book title. Anyways, I have always used both lemons and limes interchangeably when cooking my meals. The finished result always has the same results. Limes are NOT unripe lemons, HOWEVER they DO TURN YELLOW WHEN THEY RIPEN. The interesting thing here is that when limes ripen completely and turn yellow, they are actually slightly sweet, whereas lemons become more sour as they ripen. The reason why you may only be finding limes instead of lemons, is because lemons may not be domestic to the country, while limes may very well be. Good Luck!
