Make the pickled vegetables (called do chua):
Put the white vinegar, rice vinegar, water, sugar, and salt into a canning jar or container with a lid and stir until the sugar is dissolved. Add the daikon radish and carrot matchsticks. Make sure all the vegetables are covered. Refrigerate up to a month.
Make the "special" sauce: Mix mayonnaise, sriracha and Maggi seasoning together until combined. Refrigerate. I put the finished sauce in a squirt bottle for convenience. Maggi sauce is available at grocery stores and is widely used in Asian recipes.
Chop up cucumbers and jalapeno into bite sized pieces. If you like it spicy, leave the seeds in the jalapeno. Set aside.
Chop up cilantro, including stems, and set aside.
Slice up the turkey into sandwich slices. Slice open the baguettes and toast under the broiler under browned.
To assemble the banh mi: Line up the toasted baguettes. Spread on the "special" sauce, then add the sliced turkey. Add the pickled vegetables ,and top with a few chopped cucumbers, jalapenos, and chopped cilantro. Squirt or place approximately 1/4 tsp. more "special" sauce on top and serve!