Line a
roasting tin with aluminum foil and add enough salt
to make a 1cm/1/2in layer.
Scatter about half the
tarragon over the salt and add the garlic. Press the
trout down into the salt, scatter the remaining
tarragon over the top, and cover completely with
salt.
Cook for 20 minutes until tender. Remove
from the oven, crack the salt open, and carefully
lift out the trout. Serve with rice and garnish with
lemon wedges.