Can I make this without a pressure cooker?
Yes. Simmer the chicken breasts in the broth with tinga seasoning in a regular pot for 20–25 minutes until cooked through, then shred and proceed with assembly.
What are tinga seasoning bombs?
Tinga seasoning bombs are concentrated flavor packets designed to add authentic Mexican spice and tang to the chicken broth; follow the package instructions for quantity.
How do I keep the tostada shells crispy?
Assemble tostadas just before serving, or build components separately and let diners assemble their own to prevent sogginess.
Can I prep this ahead?
Yes. Cook and shred the chicken up to 2 days ahead and refrigerate. Warm it gently before serving. Assemble tostadas fresh to order.
What can I use instead of cotija cheese?
Crumbled feta, queso fresco, or shredded Monterey Jack work well as substitutes with similar crumbly or melting textures.