While it may be true that the Weather is Always Good in Costa Rica, it is almost universally true that the french fries are NOT!
This is the problem. Open your restautrant and turn on the deep fryer. Ok, its hot (not that you would actually measure the temperature). Now you turn it off.
Wait for a customer to order fries. Dump the frozen fries in and then turn it back on. Ok, you get hot, greasy mushy fries. Now turn the fryer off till next time.
Now, take a clue from McDonalds. Figure out the exact temperature that makes the best fries. Then keep your grease heated to that temperature for the entire time you are open!
Now you will have great french fries and happy customers. The small investment in gas or electrity to keep the grease hot might be a small price to pay for happier customers.
Use fresh potatoes and you'll be well on the path to coming out of the third world!
Costa Rica International