Blood compact was a ritual in the Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

 where tribes would cut their wrist and pour their blood into a cup filled with liquid and drink each other's blood as part of the tribal tradition to seal a friendship, a pact or treaty, or to validate an agreement. The cup, usually filled with wine is mixed with blood and drank by both parties entering a mutual consent.

An example of the blood compact was called Sandugo

Sandugo

The Sandugo was a blood compact, performed in the island of Bohol in the Philippines, between the Spanish explorer Miguel López de Legazpi and Datu Sikatuna the chieftain of Bohol on March 16, 1565, to seal their friendship as part of the tribal tradition. This is considered as the first treaty of...

, which took place in the island of Bohol

Bohol

Bohol is an island province of the Philippines located in the Central Visayas region, consisting of Bohol Island and 75 minor surrounding islands. Its capital is Tagbilaran City. With a land area of and a coastline long, Bohol is the tenth largest island of the Philippines...

 in the 16th century. The ritual was made between the Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 explorer Miguel López de Legazpi

Miguel López de Legazpi

Miguel López de Legazpi , also known as El Adelantado and El Viejo , was a Spanish conquistador who established one of the first European settlements in the East Indies and the Pacific Islands in 1565. He is the first Governor-General in the Philippines...

 and Datu Sikatuna

Datu Sikatuna

Datu Sikatuna was the Datu in the island of Bohol in the Philippines. His real name was "Katuna" but "Si" was added to his name as this is a nominative marker for a Filipino...

 the chieftain of Bohol. A blood compact was also made between the Portuguese

Portugal

Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 explorer Ferdinand Magellan

Ferdinand Magellan

Ferdinand Magellan was a Portuguese explorer. He was born in Sabrosa, in northern Portugal, and served King Charles I of Spain in search of a westward route to the "Spice Islands" ....

 and Rajah Humabon

Rajah Humabon

Rajah Humabon was the Rajah of Cebu at the time of Portuguese explorer, Ferdinand Magellan's arrival in the Philippines in 1521. There is no official record of his existence before the Spanish arrival, but extensive narration by Italian historian Antonio Pigafetta was made on Humabon and the...

 the chieftain of Cebu

Cebu

Cebu is a province in the Philippines, consisting of Cebu Island and 167 surrounding islands. It is located to the east of Negros, to the west of Leyte and Bohol islands...

.

A similar ritual was done by the members of the KKK (Kataastaasan, Kagalang-galangang Katipunan). Though they didn't drink it, they signed their membership with their own blood.