One method is to think of these biscuits. Really close your eyes and visualise them, the taste, the texture. How it feels on your lips, in your mouth, how it smells.
Then think of a food you are repulsed by. It can be anything. Something you hate so much you can barely touch it and would be upset if it got on your hands or you accidentally ate some. Really close you eyes and visualise this food in the same way - taste, texture, smell.
Make the images bigger, brighter, bolder, the smells more intense.
Then imagine mixing the biscuits with the food you hate - if it’s spreadable it’s on the biscuit. If it’s solid it’s between two of the biscuits- then imagine eating the two together- taste, texture, smell and the ratio is 1 yummy biscuit to 3 disgusting food smeared on top and sandwiched between.
Then! Add some more disgusting toppings - and be creative! - hair, nails, mud - just really foul toppings.
If you buy the biscuits, put them in a really awkward place like upstairs at the back of somewhere so it’s a real effort to get them - then do this visualisation every time you think about going to get the biscuits… and see if that helps 😊