Start the aromatics
Heat vegetable oil in a large skillet over medium heat. Add minced garlic and ginger and cook for 1 minute until fragrant.
Add the curry paste
Stir in the red curry paste and cook for 1–2 minutes to deepen the flavor.
Build the coconut curry base
Pour in coconut milk and broth. Add lime juice and brown sugar if using. Stir and bring to a gentle simmer.
Add cherry tomatoes
Add the cherry tomatoes to the curry and simmer for 3–4 minutes until they begin to soften.
Simmer the cod
Season cod fillets with salt and pepper. Nestle them gently into the simmering curry. Cover and cook for 6–10 minutes, or until the cod is opaque and flakes easily with a fork.
Serve
Taste and adjust seasoning with more lime or fish sauce if needed. Serve the curry over jasmine rice and top with chopped cilantro.