Can you guess what this is? Nnnooooo.... it's not a lemon on steroids!!!!
You are close, though. It's a fruit related to the lemon family which is cultivated in gardens all over the Middle East. These trees are common in Syria where they are still found in traditional Damascean interior gardens.
Here's how it compares to an ordinary lemon! Kind of bumpy, eh? Well, there's not much juice in these things but the peel is very thick and, you guessed it, it's used to make a sort of marmelade.
The peel is trimmed off and boiled in a concentrated sugar mixture on a low heat so that it becomes this candied, lemon-type peel which can be eaten at breakfast or for dessert sometimes. My dear Syrian MIL used to make it and she called it 'kabbad' in arabic.
This is just to show you my poor, sun-baked, outdoor thermometer which is registering about 94F. Not too bad since it's noontime here and don't forget it's a DRY heat! So I'll wait 'til July to complain!!!
I'll leave you with a few more hibiscus flowers.
Aren't these colors pretty?