Tropical Sun Lemon Juice is something that you need to use in a variety of dishes to give it a slight sour taste. If you don?t want to waste time finding fresh lemons, cutting and squeezing them, opt for TRS lemon juice. This has a long shelf life so you can keep it in your fridge for a long time. Just pop it out whenever you need to add a citrusy taste to your savoury dishes. Tropical Sun Lemon Juice is also used to curdle milk.