First learn cold water extraction on youtube.

https://www.youtube.com/watch?v=lESnvL564VQ&list=WL&index=10&t=1s

-Read the whole recipe before messaging me and ask me concrete questions.

-I use dihydrocodeine 30mg and 50 mg promethazine pills (or diphenhydramine)

-Cold water extract 2000mg of dihydrocodeine (or codeine) and 1000mg promethazine (or diphenhydramine) with 160 ml warm water (all at once). You will lose roughly 20% doing so (i will not consider the loss to make it more simple)

-Mix with 770 ml of either torani, monin, humco, crown, karo or homemade simple syrup ( I used 500ml of strawberry torani syrup and 270ml crown corn syrup for thickness)

-Add 7% of global 94,(or equivalent brand) which is 70 ml. If you don't have access to it, use vodka.

-Mix your cold water extraction with the syrup and alcohol.

-Opioid equivalent dose approximately : Codeine 200mg = Morphine 30mg = Hydromorphone 6mg = Oxycodone 20mg

Few other tips based on recurrent questions i get:

-Codeine or dihydrocodeine 60mg per ounce

-Morphine 15mg per ounce

-Hydrocodone 10mg per ounce

-Oxycodone 7mg per ounce

-Hydromorphone 2mg per ounce

-For extended release pills you can try crushing them, dissolving them in alcohol and then extract with coffee filters to get rid of fillers. You can leave it in alcohol for a few days to make sure you get the most out of it. Obviously the best way to go is instant release pills. Blending the pills in alcohol also works really great if it does not dissolve on it’s own.

-If you want to make your own simple syrup there are more steps to it that i won't include here. The reasons why i use brand name syrups are because i don't have to worry about the preservatives and they work just fine to me as i am not trying to replicate anything.

-I do not sell anything ! This is a hobby and i'm just trying to teach people on how to do this in the simplest way possible.

-It is to your discretion to change colour , strength , consistency , opioid and quantity of antihistamine used etc.

-Antihistamine worth using also is chlorpheniramine.

-Antihistamines (prevents nausea and itchiness) and alcohol are not a necessity but i suggest you use them.

-If you want a ligh purple, use a clear canne sugar syrup (monin, torani or sugar water homemade). As there has no colour added, use a light blue food dye mixed with pink food dye. Play with colours until you have it right there is no secret to the right colouring.

-Yes you need to cwe pills that don't even contain paracetamol(acetaminophen). If you dont cwe, your syrup will be horribly cloudy because of the fillers.

-The amount of water you use for your cold water extract is up to you. It’s going to affect the consistency of the syrup. Also note that the less water you use the more codeine you lose so take all that into consideration.

-This is for fun so have fun with it. You fail one batch, do another one until you get it right. That's how i learned: trial and error and i probably saved you a lot of time and money with this recipe!

-Let's make home-brew syrup a safe way to sip lean by understanding how it's made, CHEERS!

More info

https://old.reddit.com/r/homebrewlean/comments/omkkh7/custom_flavor_ideas_megathread/

https://old.reddit.com/r/homebrewlean/comments/lv3eam/heres_a_lean_calculator_for_any_homebrewers_or/