In a large pot, bring the water to a boil. Add the sorrel, ginger, cinnamon sticks, cloves, allspice, and orange slices (if using). Stir to combine.
Reduce the heat to low, cover the pot, and let the mixture simmer for about 10 minutes. Remove from heat and allow it to steep for at least 1 hour (for maximum flavor, steep overnight in the refrigerator).
Strain the mixture into a large bowl or pitcher, discarding the solids. Stir in the sugar, honey (if using), vanilla extract, and lime juice. Taste and adjust sweetness as needed.
For a festive twist, stir in white rum or red wine for a spiked version.
Serve chilled over ice or warm for a cozy tea. Garnish with lime slices or a cinnamon stick if desired.