Galgal (Khate or Big-Lemon) is widely used for multiple purposes but one of common use during winter season is to eat this by preparing "Muraba".  

गलगल के अचार में नींबू जैसा खट्टा-मीठा स्वाद होता है । ये खाने का स्वाद तो बढाता ही है व पाचन भी सुधारता है । Hill Lemon (Galgal (Khate or Big-Lemon)) pickle is zesty like Lemon Pickle. This improves the taste of the food as well as improves digestion.