Brazo Gitano de Guayaba

• 17.5 ounces guava paste
• 1 to 2 tablespoons fresh orange juice or lemon juice

Place the guava paste, orange juice, rum, and orange zest in a food processor with the plastic knife blade and pulse until pureed and spreadable.

Gently unroll the cooled cake. Evenly spread the guava mixture over the cake, leaving a 1-inch border around the edges uncovered. Carefully roll up t