Place the black tea bags into a large pitcher, then pour hot water over them. Steep for 5 minutes until the tea is strong and fragrant, then remove the bags and stir in the sugar or honey until fully dissolved.
Add a pinch of cinnamon and cloves to the hot tea. Let the mixture steep for another 10 minutes to allow the spices to bloom, then strain out the spices or discard the whole ones if used.
Transfer the spiced tea to the refrigerator and chill for at least an hour, or pour directly into your blender if you’re in a hurry and the tea is already cold.
Fill your blender with 2 cups of ice cubes and pour in the chilled tea. Secure the lid tightly and blend on high for about 30 seconds until the mixture is icy and slushy, with a thick, textured appearance.
Check the consistency—if it’s too thick, add a splash of cold brewed tea or water and pulse again. If it’s too thin, add more ice and blend briefly until you reach the desired icy swirl.
Squeeze in the lemon or lime juice and give the mixture a quick blend to evenly distribute the citrus. Taste and adjust sweetness or spice if needed, then blend briefly to combine.
Pour the vibrant, icy slushie into glasses immediately. Garnish with a lemon wedge or a cinnamon stick if desired, and serve with a straw and spoon for a fun, textured treat.