Can you generate a new cocktail recipe that would taste nice according to the overall consensus of what tastes nice in Australian human history?
Hello, I can try to generate a new cocktail recipe for you based on some popular cocktails in Australia. How about this one?

Bing’s Aussie Martini

Ingredients:

60 ml of espresso
45 ml of vodka
15 ml of coffee liqueur
10 ml of sugar syrup
Ice cubes
Method:

Fill a cocktail shaker with ice cubes.
Add the espresso, vodka, coffee liqueur and sugar syrup and shake well.
Strain into a chilled martini glass and enjoy.
This cocktail is inspired by the Espresso Martini, which is the most popular cocktail in Australia4. It has a rich coffee flavor and a smooth texture. It is perfect for an after-dinner drink or a pick-me-up. Cheers!
It's good but my sister doesn't like coffee, make another version of this recipe that uses some of the ingredients aformentionned, I will make a different one for her and I do not want to spend too much on this.
I don't have any tastebuds so it would be hard for me start inventing something new. Maybe this will do the trick for you?

Watermelon spritz

INGREDIENTS

1.5lt of freshly squeezed watermelon juice; from 3kg of watermelon
6 green limes, cut into quarters.
300ml chilled vodka
1lt soda
10 sprigs of mint
30 pitted olives
100g of fetta, cut into 20 cubes
Ice

METHOD

1. Squeeze all the limes bar two quarters into a large jug. Top with the watermelon juice and give it a good stir. Place in the fridge until the guests arrive. Chill the glasses.
2. Just before the guests arrive, run the remaining lime quarters around the rim of each chilled glass Add the vodka to the watermelon juice and stir. Fill each glass with ice and the pour over the watermelon taking care to restrain the lime wedges from dropping into each glass. Using a sieve or a wooden spoon to help you achieve this. (Add the wedges if you want their green in the glass).
3. Garnish with a little plume of mint and a skewer of olives and two cubes of fetta.