Do chua (pickled veggies) and banh mi (Vietnamese sandwich) - Aliette de Bodard

Ingredients

• Pickle jars. I used two old jars of jam, as we have a big jam eater at home.-
• 3 medium-sized carrots (you can mix and match with daikon as well, say a carrot and a daikon, but I can get carrots way more easily than daikon...)
• 4 teaspoons sugar, 2 teaspoon salt
• ¼ cup sugar
• ½ cup rice vinegar (white vinegar if you really can't find rice vinegar, but I'd recommend rice, it's less astringent)
• ½ cup warm water
• a 7-inch bit of baguette (a demi-baguette for the French amongst us)
• chả lụa, sliced into sticks (you can buy it in Asian stores)
• dồ chua
• seeded cucumber sticks
• leaves from 3-4 coriander stalks, chopped roughly
• maggi seasoning sauce or soy sauce
• chilli slices (optional)
• butter or mayonnaise (optional)