Prepare the Vegetables: Bring a pot of water to a boil and add a little salt. Blanch the broccoli and cauliflower first, followed by the red and green peppers cut into pieces, and finally the carrots cut into rings. Remove and set aside.
Make the Pickle Brine: In a separate pot, combine the apple cider vinegar, sugar, salt, bay leaves, garlic cloves, water, and peppercorns. Bring to a boil.
Combine Vegetables and Brine: Add the blanched vegetables to the boiling brine. Wait for the mixture to start boiling again.
Sterilize Jars: Place jars in the oven at 100 degrees Celsius for about 10-15 minutes to sterilize.
Jar the Pickles: Transfer the hot vegetable and brine mixture into the sterilized jars. Seal the jars and turn upside down to cool.
Serve: Once cooled, the pickled vegetables are ready to be served. Add a little olive oil to taste.