bitters based cocktails

Some of my favorite drinks involving significant quantities of bitters (both potable & non)...

Fernet Flip (Ira Koplowitz)

1 1/2 ounces Fernet Branca
1 1/2 ounces Carpano Antica Formula
2 dashes bitters (Angostura, but something like Chocolate/Mole is great, too.)
1 dash Demerara syrup (If you're reading this thread, feel free to omit.)
1 whole egg

2 Cups of Blood (Tonia Guffey)

3/4 ounce Mezcal Vida
3/4 ounce Suze (or other Gentian liqueur)
3/4 ounce Punt e Mes
3/4 ounce Bittermens Xocolatl Mole Bitters
Grapefruit twist garnish

Peychaud's Sour (Ira Koplowitz)

1 ounce Peychaud's Bitters
1 ounce St. George Absinthe
.75 ounce lemon juice
.5 ounce simple syrup
1 egg white
Lemon twist garnish

Unnamed Flip (Troy Sidle)

2 ounces Rittenhouse BIB
3/4 ounce Angostura Bitters
1/2 ounce Blis Bourbon Barrel Matured Maple syrup
1/4 ounce Demerara syrup (again, you might want to omit this if you're looking for something more bitter)
1 whole egg
Fresh Nutmeg garnish

Campari Martini (Maks Pazuniak)

3 ounces Campari
Dash Saline (3 parts water to 1 part salt)
Orange twist garnish

Eeyor's Requiem (Toby Maloney)

1 1/2 ounces Campari
1 ounce Dolin Blanc
1/2 ounce Tanqueray
1/4 ounce Cynar
1/4 ounce Fernet
15 drops Orange bitters (50/50 Fee's & Regan's)
Heavy Orange Oil garnish (3+ peels)