diff --git a/cookbook/.env b/cookbook/.env
new file mode 100644
index 0000000..4ccaeb0
--- /dev/null
+++ b/cookbook/.env
@@ -0,0 +1 @@
+DATABASE_URL=db.sqlite3
diff --git a/cookbook/Cargo.toml b/cookbook/Cargo.toml
index a460661..a5b60ec 100644
--- a/cookbook/Cargo.toml
+++ b/cookbook/Cargo.toml
@@ -5,3 +5,6 @@ authors = ["artus <artus@landoftheunicorn.hd.free.fr>"]
 edition = "2018"
 
 [dependencies]
+libsqlite3-sys = { version = "*", features = ["bundled"] }
+diesel = { version = "1.4.1", features = ["sqlite"] }
+dotenv = "0.9.0"
diff --git a/cookbook/db.sqlite3 b/cookbook/db.sqlite3
new file mode 100644
index 0000000..4478b71
Binary files /dev/null and b/cookbook/db.sqlite3 differ
diff --git a/cookbook/diesel.toml b/cookbook/diesel.toml
new file mode 100644
index 0000000..92267c8
--- /dev/null
+++ b/cookbook/diesel.toml
@@ -0,0 +1,5 @@
+# For documentation on how to configure this file,
+# see diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"
diff --git a/cookbook/migrations/.gitkeep b/cookbook/migrations/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/cookbook/migrations/2019-01-27-201901_create_recipes/down.sql b/cookbook/migrations/2019-01-27-201901_create_recipes/down.sql
new file mode 100644
index 0000000..cbda4b8
--- /dev/null
+++ b/cookbook/migrations/2019-01-27-201901_create_recipes/down.sql
@@ -0,0 +1,2 @@
+-- This file should undo anything in `up.sql`
+DROP TABLE recipes
diff --git a/cookbook/migrations/2019-01-27-201901_create_recipes/up.sql b/cookbook/migrations/2019-01-27-201901_create_recipes/up.sql
new file mode 100644
index 0000000..709cf18
--- /dev/null
+++ b/cookbook/migrations/2019-01-27-201901_create_recipes/up.sql
@@ -0,0 +1,8 @@
+-- Your SQL goes here
+CREATE TABLE recipes (
+  id INTEGER PRIMARY KEY NOT NULL,
+  title VARCHAR NOT NULL,
+  category INTEGER NOT NULL,
+  ingredients TEXT NOT NULL,
+  preparation TEXT NOT NULL
+)
diff --git a/cookbook/src/bin/show_recipes.rs b/cookbook/src/bin/show_recipes.rs
new file mode 100644
index 0000000..2b5fb0c
--- /dev/null
+++ b/cookbook/src/bin/show_recipes.rs
@@ -0,0 +1,23 @@
+extern crate cookbook;
+extern crate diesel;
+
+use self::cookbook::*;
+use self::models::*;
+use self::diesel::prelude::*;
+
+fn main() {
+    use cookbook::schema::recipes::dsl::*;
+
+    let conn = establish_connection();
+    let result = recipes
+        .limit(5)
+        .load::<Recipe>(&conn)
+        .expect("Error loading recipes");
+
+    println!("Here are {} recipes :", result.len());
+    for rec in result {
+        println!("{}", rec.title);
+        println!("-------------\n");
+        println!("{}", rec.ingredients);
+    }
+}
diff --git a/cookbook/src/lib.rs b/cookbook/src/lib.rs
index 30c1801..9f1d396 100644
--- a/cookbook/src/lib.rs
+++ b/cookbook/src/lib.rs
@@ -1,7 +1,28 @@
+#[macro_use]
+extern crate diesel;
+extern crate dotenv;
+
+pub mod schema;
+pub mod models;
+
 mod recipe;
 mod storage;
 mod importer;
 
+use diesel::prelude::*;
+use dotenv::dotenv;
+use std::env;
+
+pub fn establish_connection() -> SqliteConnection {
+    dotenv().ok();
+
+    let db_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set !");
+    SqliteConnection::establish(&db_url)
+        .expect(&format!("Error connecting to {}", db_url))
+}
+
+
+
 #[cfg(test)]
 mod tests {
     #[test]
diff --git a/cookbook/src/models.rs b/cookbook/src/models.rs
new file mode 100644
index 0000000..53e04c2
--- /dev/null
+++ b/cookbook/src/models.rs
@@ -0,0 +1,8 @@
+#[derive(Queryable)]
+pub struct Recipe {
+    pub id: i32,
+    pub title: String,
+    pub category: i32,
+    pub ingredients: String,
+    pub preparation: String,
+}
diff --git a/cookbook/src/recipe.rs b/cookbook/src/recipe.rs
index c71c5e9..9076fe5 100644
--- a/cookbook/src/recipe.rs
+++ b/cookbook/src/recipe.rs
@@ -40,8 +40,7 @@ impl Ingredient {
     pub(super) fn new(name: String) -> Ingredient {
         Ingredient {
             alias: vec![name],
-            ..
-            Default::default()
+            ..Default::default()
         }
     }
 
diff --git a/cookbook/src/schema.rs b/cookbook/src/schema.rs
new file mode 100644
index 0000000..21e9919
--- /dev/null
+++ b/cookbook/src/schema.rs
@@ -0,0 +1,9 @@
+table! {
+    recipes (id) {
+        id -> Integer,
+        title -> Text,
+        category -> Integer,
+        ingredients -> Text,
+        preparation -> Text,
+    }
+}
diff --git a/planner/src/solver.rs b/planner/src/solver.rs
index 52aafc2..c041869 100644
--- a/planner/src/solver.rs
+++ b/planner/src/solver.rs
@@ -122,8 +122,7 @@ impl<'a, V> ProblemBuilder<'a, V> {
             })
     }
 
-    pub fn add_variable(
-        mut self,
+    pub fn add_variable(mut self,
         name: String,
         domain: &'a Domain<V>,
         value: Option<&'a V>,
@@ -153,8 +152,7 @@ mod tests {
         let mut problem: Problem<_> = Problem::build()
             .add_variable(String::from("Left"), &domain, None)
             .add_variable(String::from("Right"), &domain, None)
-            .add_constraint(
-            |assign: &Variables<i32>| {
+            .add_constraint(|assign: &Variables<i32>| {
                 assign.get("Left").unwrap() == assign.get("Right").unwrap()
             })
             .finish();
diff --git a/web/index.html b/web/index.html
new file mode 100644
index 0000000..cc8b02e
--- /dev/null
+++ b/web/index.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="UTF-8">
+  <script src="https://cdn.jsdelivr.net/npm/vue@2.5.22/dist/vue.js"></script>
+</head>
+<body>
+<div id="app">
+  <h1>Cook Assistant</h1>
+  <p>Fetch value from wasm : {{ value }}</p>
+  <strong>{{ message }}</strong>
+</div>
+</body>
+<script type="text/javascript">
+
+  var getWasmValue = function() {
+    return 42
+  };
+
+  var app = new Vue({
+    el: '#app',
+    data: {
+      message: 'Hello ! We are trying out here...',
+    },
+    computed: {
+      value: getWasmValue,
+    }
+  });
+</script>
+</html>