Prepare the Pastrami:

1. Heat the Pastrami: If using pre-sliced pastrami, you can either eat it cold or heat it up. To warm it, place the pastrami in a large skillet over medium heat for about 5-7 minutes, stirring occasionally until heated through. This step helps release the juices and enhance the flavor of the pastrami.
2. Prepare the Condiments: While the pastrami heats up, spread a layer of yellow mustard on two slices of rye bread. Adjust the mustard to your taste—some like it tangy, while others prefer a subtler flavor.

Assemble the Sandwich:

3. Toast the Rye Bread: In a small skillet, heat the olive oil over medium heat. Once hot, place the slices of rye bread in the skillet and toast for about 2-3 minutes on each side or until golden brown and crispy. This adds a satisfying crunch to the sandwich.
4. Layer the Pastrami: Once the bread is toasted, take one slice and layer a generous portion of the warm pastrami on top. You can stack the pastrami as high as you like, but make sure it’s evenly spread for the best bite.
5. Add Swiss Cheese (Optional): If you’re a fan of melted cheese, place a slice of Swiss cheese over the pastrami while it’s still hot. Let it melt slightly to add a creamy texture to the sandwich.
6. Top with Pickles: Add a few slices of fresh pickle on top of the pastrami, or drizzle a little pickle brine for an extra burst of flavor.
7. Assemble the Second Slice of Bread: Place the second slice of toasted rye bread on top, pressing gently to hold everything together.

Serve:

8. Cut and Serve: Slice the sandwich in half on a diagonal for easy handling and to create a more traditional presentation. Serve it immediately with extra pickles or your favorite side dish, like potato chips or coleslaw.