Prepare the Syrup:
In a medium saucepan, combine sugar, water, and lemon juice. Bring to a boil, then reduce heat and simmer for about 10 minutes until the syrup thickens slightly.
Add rose water or vanilla extract, if using. Set aside to cool.
Make the Dough:
In a large saucepan, bring water and butter to a boil. Add sugar and salt.
Lower the heat, and add flour all at once, stirring vigorously. Cook and stir until the mixture forms a ball and pulls away from the sides of the pan.
Remove from heat and let cool for a few minutes. Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next.
Fry the Tulumba:
Heat oil in a deep fryer or large, deep pan to 350°F (175°C).
Transfer the dough to a pastry bag fitted with a large star tip. Pipe strips of dough (about 3 inches long) into the hot oil, cutting with scissors.
Fry until golden brown, turning once. This should take about 2-3 minutes per side.
Soak in Syrup:
Immediately transfer the fried Tulumba to the cooled syrup. Let them soak for about 2 minutes, turning them to ensure even coating.
Remove from the syrup and place on a serving dish to cool slightly.
Serving:
Tulumba is best served at room temperature or slightly chilled. They can be garnished with ground pistachios or a sprinkle of cinnamon for an extra touch.