If the doctor took a sample of the amniotic fluid he could tell. Because there is DNA in the amniotic fluid. But someone can usually guess at 16 weeks on an ultrasound and 20 weeks a person can usually tell for sure. kittenbrower Â· 9 years ago.
1 Pupusas Revueltas have a filling made of a mixture of cheese, chicharrones and refried beans. 2  Pupusas de Queso y Loroco have a filling made of a cheese and tropical vine flower (Loroco).
Directions See How It's Made. 1  A complete Salvadoran pupusas has many components. 2  1 - Filling - Fillings will vary based on your taste but the two most popular fillings are pupusas de queso, pupusas made of cheese only, or pupusas revueltas, pupusas made of a few different fillings. The most common revueltas are made of beans and cheese or chicharron and cheese - see my post on making chicharrones to make this one.