You simply need to soak your desired quantity of lentils in water overnight. The next morning, drain and rinse them and leave them in a jar to sprout. ... I keep my jar in my windowless kitchen and the lentils sprout as they should, so don't worry too much about whether or not they need to be in the sun.
How do I make bean sprouts from lentils?
Instructions for Sprouting Lentils
Soak lentils for at least 8 hours or overnight. Drain and rinse lentils thoroughly. Invert the jar over a bowl at an angle so that the lentils will drain while still allowing air to circulate. Repeat rinsing and draining 2-3 times per day until sprout tails appear.
Is it okay to eat sprouted lentils?
And on top of being good for you, sprouting opens new avenues for flavor: Sprouted lentils are grassy, crunchy, refreshing, and filling. Use them on slaws or salads, or crisp them up for a flavorful garnish. You can use most varieties of lentils, but green, black, and de Puy lentils work best.