Hot And Sour Shrimp Soup

• 2 slalks lemongrass
• 1 serranor
• 1 serrano
• 1/2 lime
• 1,200 ml chicken broth
• 475 gr straw mushrooms (canned)
• 120 gr shrimp (raw)
• 38 ml lime juice (fresh)
• 18 gr coarsely cilantro (chopped)
• 16 ml fish sauce