Heating lemons before squeezing them will give you double the amount of juice. When you buy lemons, look for those that have the smoothest skin and no points on the ends. These will have better flavor and more juice.
If you love fried fish but not the smell, soak your fish in lemon juice for about 20 minutes before frying.
Add a little lemon juice (and sugar to taste) to make tomatoes in any recipe have the tangy, acidy taste that is so elusive to our modern-day tomatoes.