Thai-style BBQ chicken recipe

Name: Thai-style BBQ chicken recipe
Prep time: 15 min
Cook time: 1 h 15 min
Total time: 1 h 30 min
Cuisine: Asian, Thai
Ingredients: 75g brown sugar; 60ml fish sauce; 60ml soy sauce; 18.40 gm vegetable oil; 1 stem lemongrass, sliced; 10 coriander sprigs; 8 garlic cloves, peeled; 2 RSPCA Approved Whole Chickens (about 2.2kg each); 2 x 375ml cans beer; 110g brown sugar; 80ml lime juice; 60ml rice wine vinegar; 48.80 gm fish sauce; 6 garlic cloves, finely chopped; 4 long red chillies, seeded, finely chopped; 40.00 ml finely chopped coriander