Build the Aromatic Base:
In large pot over medium heat, add coconut oil and allow to melt until liquid and shimmering
Add freshly grated ginger and minced garlic
Cook for 2 minutes, stirring frequently, until fragrant and slightly softened (do not allow to brown)
Stir in red curry paste
Cook for 1 additional minute, stirring constantly, until curry paste is fragrant, slightly darkened, and fully integrated
Add Broth, Sweetener, Lemongrass, and Soy Sauce:
Pour in vegetable broth
Add maple syrup, lemongrass chunks, and soy sauce
Stir everything together until curry paste is fully dissolved and evenly distributed
Increase heat to bring broth to boil
Reduce to gentle simmer
Allow to simmer for 10 minutes (this is lemongrass infusion period - do not rush this step)
Add Mushrooms, Coconut Milk, and Tofu:
Add sliced shiitake mushrooms to simmering broth
Add both cans of full-fat coconut milk
Add cubed extra firm tofu
Stir gently to combine (be careful not to break tofu cubes)
Bring pot back to gentle simmer
Cook for 3 minutes until mushrooms have softened, coconut milk is fully incorporated, and tofu is heated through
Remove from Heat and Add Lime Juice:
Pull pot completely off heat
Add 3 tablespoons fresh lime juice
Stir gently to distribute
Using tongs or spoon, locate and remove all lemongrass chunks from soup
Discard lemongrass pieces
Taste, Adjust, and Serve:
Taste soup and adjust seasoning as needed:
- Add more soy sauce for saltiness and umami
- Add more lime juice for brightness
- Add more curry paste for heat and spice
- Add splash of maple syrup if broth tastes too sharp
Ladle into serving bowls
Top generously with thinly sliced green onions and fresh cilantro leaves
Serve immediately
Critical Tips:
Press tofu for at least 15 minutes under heavy pan before cubing
Use full-fat coconut milk exclusively for richest broth
Never boil soup aggressively after adding coconut milk (causes separation)
Remove lemongrass before serving
Add lime juice off heat to preserve bright citrus flavor
Taste and adjust seasoning before serving
Serving Suggestions: Serve in wide, deep bowls with lime wedge alongside. Pair with steamed jasmine rice on the side or add cooked rice noodles directly to bowls. For garnish, add drizzle of chili oil, fried shallots, or Thai basil leaves.